This article is from ProPublica, so you can take this person’s opinion on root causes however you want. But numbers are numbers, and checkable. Here are some numbers:

• “According to the Centers for Disease Control and Prevention, guns became the leading killer of children in 2020, overtaking car crashes, drug overdoses and disease for the first time in the nation’s history.”
• “And then Barack Obama won in 2008. So you have this sort of uncapping of hate and conspiracy, much of it racially driven, that the NRA was tapping into. Prior to 2007, people in the United States never purchased more than 7 million guns in a single year. By the time Barack Obama left office, the United States was purchasing almost 17 million guns a year. And so I think it’s impossible to discount the degree to which Obama’s presidency lit this whole thing on fire.”
• “But with Trump, we experienced a whole new, never seen before level of fear, racism, hatred and conspiracy that culminated in 2020. In that year, you had George Floyd, COVID lockdowns, Black Lives Matter, Antifa protests and Kyle Rittenhouse. I mean, it’s the most tumultuous year any of us can remember with the most hatred and conspiracy and nastiness. None of us can remember a year like that. In that year, the United States consumers bought almost 23 million guns in a single year, more than three times as much as before Barack Obama took office.”