What misconceptions did you hear. This would be a great topic worth discussing
The ability to claim self defense can switch from the individuals...isn't accurate
The story of his friend defending his friend but still being charged with a felony...sounds fishy and I'm wiling to bet lacks a lot of facts of the investigation.
That showing retreat is important in claiming self defense.....in stand your ground states, there is no requirement to retreat and not retreating cannot be held against you.
Admitting to training in Martial Arts or having fighting skills hurts your case....no state that I know of penalizes you for fighting skills or training.
Threatening someone with force if they touch you hurts your self defense claim....you can legally use threat of force to defend yourself if you feel in danger
Striking someone 1st hurts your self defense case....you just have to articulate that you were in fear of an imminent attack that you were defending against.
The story about the guy waiting until he was on the ground against multiple attackers before pulling his knife and cutting the guy once on his hand was bad.
-He did not have to wait until he was down before pulling his knife.....in most places, he could have pulled the knife and used it as a threat of force to protect himself from attack.
-The fact that he only cut one guy in the hand is moot.....most places he would have been justified using lethal force with three guys beating on him while he was on the ground.
And just ignoring that self defense laws vary from state to state....instead of advising to know your rights where you live.