I wanted to share something I read on one of the forums- a thought experiment you can use when discussing gun control.
Ask the other person:
"Consider the most evil American politician you know, and don't tell me who it is."
Pause for thought... yeah they are probably thinking Trump.
"Imagine this man is President of the USA, and his faction has control of Congress and the Supreme Court. Imagine he has a large amount of popularity among the public."
Pause for thought.
"Would you like the government of this man to control all the guns in the USA?"
If they answer that they are fine with it, the conversation is over, because they are hopeless.
If they say no, well, tell them they understand the purpose of the Second Amendment. You can then talk about how gun registration, licensing, bans of military rifles etc make tyranny possible.