As a matter of self defense today, you have to come to terms that as a white person you could very well be the target of racial crime, particularly assault.
With this in mind, and understanding that the predator class prefers a sudden, blindside attack, you will have to adjust your positioning and posture. Recognizing the attack posture of your enemy is extremely important as well. They will approach looking from side to side for witnesses or those who might intervene (police). Very often they will sway to their strong hand side as a windup, then deliver the blow with body weight and force.
Remember, time equals distance, distance equals time.
The more distance you create from your assailant, the more time you have to deal with the threat.
In any fight, and especially with the tactics employed by the polar bear hunting class, your mission, if engaged, is not surviving, it’s winning. A large step in winning is staying in the fight, and not getting knocked unconscious.
So you must protect your head.
If ever engaged in conversation with one of the predatory class under circumstances that make you feel they could be a threat, steeple your fingers out in front of you just directly under your line of sight. This gives you a headstart if they decide to assault you. Even if you deflect a portion of the blow as it rolls off your forearms, then you are in a much better position than being proned out cold.
Also for those that shoot, practice shooting from hip and from laying on your back prone, shooting between your knees. If you don’t feel comfortable doing this or your range disallows it, dry fire this technique at home. Remember, most fights go to the ground. Count on that happening. It most certainly did with GZ.
I would also recommend a technique many of us in LE use. It’s called “Self-talk”. It’s a basic “If this_____ happens, then I do this______...”. It’s having a plan beforehand, practicing it in your mind from time to time, in order to spend less time thinking about what to do in critical incident, and more time ACTING in manner that leads to a positive resolution.