You're preaching to the choir about Blacks voting against their self interest. Bernie Sanders had no chance at the nomination due in large part to the fact that southern black voters would never vote for him and are tied to the Clintons even though the Clinton Administration instituted plenty of policy that doubled down on harming the progress of the black community. It's infuriating. Evangelicals do the same damn thing. In the case of black voters often it's somewhere in between both racial and religious loyalties that are often nonsensical.
Your argument for firearms changing history is simplistic although I agree with the intention. Native Americans didn't have firearms either and were essentially enslaved too. How about people just be left the **** alone? Not every culture was built on embracing the use of guns. Clearly history has shown that either you have them and survive or you don't and get taken over. That mentality gets murky though in a urban/suburban setting. We're never going to be Australia. We could never disarm to that degree. We shouldn't either. We have a much more complex society. Our government is also much more nefarious.
I'm talking about the 2nd amendment philosophically as a entitlement issue. I'm talking about how it is viewed by people in different parts of society. Gang members feels entitled to carry just as much as 9 to 5 people. You can't tell either side their wrong either because of their social standing and their environment. You can argue the law but as we all know that doesn't prevent guns from getting into peoples hands or violence from happening.
I felt you did assume, and I do have my opinions about Trump supporters but mostly about Trump as a candidate. I try to be open to people's opinions since they are the voters who put these candidates into their positions. Trying to reconcile my opinions about Trump versus my opinions about people who voted for him for may still vote for him is what I'm doing right now.
I do a good bit of woodworking. The other day my table saw didn't work. I'm looking over the saw, checking to see if something was wrong with the electric, trying to figure this thing out. Turns out I forgot to plug the damn thing in. Point is sometimes the simple is the answer. We have gotten caught up into looking for complex answers to everything. In both those cases if the people in question could have armed themselves and given an organized resistance, history may very well have been different. Native Americans, when they did get guns, made things a bit more complicated, see the Apache and the Lakota Souix, among others.
The problem with "doing something" on guns is what do you do? I don't really have guns because I fear a government takeover, or I fear for my life or anything really deep. I enjoy shooting. I enjoy history. I combine those two things by collecting and shooting World War 1 and 2 era weapons. I do this for fun and relaxation. However, too many times that doing something includes a ban that would include guns like the M1 Garand or the M1 Carbine that would caught up in the zeal of banning. I just have never yet found an argument on how taking guns away from someone like me, who shoots them safely, cleans and maintains them at all times, and locks them up when not in use would keep anyone safer. However, most proposed new laws will effect people like me, and will have zero effect on the criminal.