What if a US politician purposely uses Twitter to incite an angry mob to commit a lynching? These are not just hypotheticals, internet platforms have driven mob violence at various scales in several countries.
"Just don't ban US politicians" seems like an unworkable solution.
You are right, he did not directly "cause" it in the strictest sense. Never did he say "storm the capitol" however. as a smart person. you should understand implications and metaphors and that many people know how to tiptoe the line between plausible deniability. and some can even dance on it. if you want to ignore this, then its fine.
I purposely did not mention Trump because I was not talking about Trump. I was referring to anti-muslim violence in BJP regions of India, and anti-Rohynga violence in Myanmar.
"Just don't ban US politicians" seems like an unworkable solution.