And why should we care if there is research or not?
Do we give up our rights due to the outcome of research?
No! The right to self defense is unalienable.
They way I see it is quite simple. Don’t want to be shot or killed breaking into someone’s house or business?
Don’t do it in the first place. In every instance, it was the intruder/attacker that had the choice; not the victim. Don’t make bad choices and you won’t have to worry about suffering the consequences.
You should care if your political enemy lies and nobody calls him/her on the lies.