If you are accused of domestic violence in Texas, you may be thinking, “I did not start it. I was defending myself.” Self-defense can be a valid legal justification, but it is not something you prove with opinions or assumptions. It rises or falls on facts, timing, and evidence.

My name is Paul Key, and I defend people charged in Collin County and Dallas County, including McKinney. When self-defense is on the table, the first goal is to stop the situation from getting worse. The second goal is to preserve and develop the proof that supports your position.

First, a key point Texas law makes clear

Texas law defines “family violence” broadly, but it specifically says the definition does not include “defensive measures to protect oneself.”

That does not mean every claim of self-defense automatically wins. It means the law recognizes that defensive actions can exist in a family or household conflict, and those defensive actions are treated differently than aggression.

Self-defense is a legal justification, not just a denial

In Texas, the core self-defense statute says a person is justified in using force against another “when and to the degree” the person reasonably believes the force is immediately necessary to protect against another’s unlawful force.

That language matters. Prosecutors and police often focus on the injury or the allegation. Self-defense analysis focuses on:

• What happened first

• What threat existed in that moment

• Whether your response matched the threat

• Whether the force was immediately necessary under the circumstances

If your response looks like retaliation, punishment, or escalation after the threat passed, self-defense becomes harder to establish.

Deadly force is treated differently

Some cases involve allegations of deadly force or serious injury. Texas has a separate statute for deadly force in defense of a person. It builds on self-defense and adds additional requirements, including the reasonable belief that deadly force is immediately necessary in specific circumstances.

If your case involves weapons or serious injury allegations, you need careful strategy and careful language from the beginning.

What “domestic violence” charges usually look like in Texas

Most “domestic violence” charges in Texas are prosecuted under the assault statute, which covers causing bodily injury, threatening imminent bodily injury, or offensive or provocative contact.

When the allegation involves a family member, household member, or dating relationship, the case can be treated as family violence under Texas law.

Self-defense can apply in these cases, but the defense is usually won or lost on the same practical issue: what evidence proves you were responding to unlawful force, and not initiating it.

The “primary aggressor” problem in real cases

Many family violence arrests happen fast. Officers arrive to a chaotic scene, speak to people who are emotional, and make decisions based on limited information. Police reports often end up with a “primary aggressor” narrative. Once that narrative exists, it tends to shape everything that follows.

Your defense has to address that narrative directly, using objective evidence wherever possible.

Evidence that helps support self-defense

Self-defense claims tend to be strongest when they are corroborated. Common sources of corroboration include:

Video and audio evidence

• Body camera footage

• Dash camera footage

• Doorbell or home security video

• 911 recordings and dispatch notes

Video is often the difference between an allegation and a defensible case because it captures timing, demeanor, injuries, and what was said.

Injury evidence, on both sides

• Photographs taken immediately, with lighting that clearly shows bruising, redness, swelling, or scratches

• Medical records or EMS notes if treatment was needed

• Location and pattern of injuries, which can support defensive posture versus offensive striking

Communications and digital evidence

• Text messages, call logs, voicemails, and social media messages showing threats, escalation, coercion, or admissions

• Evidence showing who initiated contact and when

• Screenshots that preserve context, not just isolated lines

Witnesses

• Neighbors who heard yelling, threats, or a struggle

• Family members or roommates present at the time

• Any third party who saw injuries or behavior before police arrived

Witnesses are often imperfect, but even small details can help confirm timeline and credibility.

The timeline

Self-defense is heavily timing-based. A clear timeline can support “immediately necessary” force and can also show when the threat ended.

What can hurt a self-defense claim

Even when someone acted defensively, the following issues can undermine the claim:

• Inconsistent statements that shift over time

• A response that appears disproportionate to the threat

• Continuing the conflict after the immediate danger passed

• Contacting the complainant after an arrest or after a no-contact order is issued

• Trying to “fix it” with apologies or explanations in texts that are later used as evidence

If there is any no-contact order or protective order, do not assume you can communicate because the other person contacted you first. Court orders are enforced based on the order’s language, not informal consent.

What to do if you acted in self-defense and were arrested

1. Do not contact the complainant. Not directly, not indirectly, not through friends.

2. Preserve evidence immediately. Save messages, screenshots, call logs, photos, and witness names.

3. Write down the timeline for your lawyer. Do not publish it online.

4. Do not “explain” your side to investigators without counsel. Statements made under stress often create contradictions that get used against you later.

5. Follow every bond condition and court order precisely.

How I approach self-defense cases in Collin and Dallas County

When I defend a family violence case where self-defense is involved, I focus on evidence first. That includes getting the reports and video, identifying inconsistencies, and building a timeline that matches objective proof. Self-defense is not a slogan. It is a legal justification grounded in specific statutory standards.

Some cases resolve without trial. Some should be tried. Either way, you should not plead guilty simply because you are under pressure or because it feels like the system already decided what happened.

Talk with a McKinney domestic violence defense attorney

If you were accused of domestic violence in McKinney or elsewhere in Collin County or Dallas County, and you believe you acted in self-defense, you need to treat it like an evidence case right away.

Call my office for a confidential consultation, or send a message through the website form.

Citations

https://statutes.capitol.texas.gov/?tab=1&code=PE&chapter=PE.9&artSec=9.32

https://codes.findlaw.com/tx/penal-code/penal-sect-9-31/