Better to admit that was wrong if you’re interested in having a discussion, and maybe even influencing some people’s opinions.
Gun violence is a absolutely a big problem in the US. The interesting twist is it’s a Constitutional right to bear arms in the US, so this is a case of a limitation of government power leading to an adverse outcome. It’s a difficult and widely debated issue in American politics, and in fact the American people will ultimately decide how the rules around gun ownership will evolve over time in the hopes of reducing that number in pursuit of a safe and free society.
I would still maintain my point that personal safety-wise, China is pretty good by today's standard.