> Or theres a lot of people who like to troll and propagandize americans for nationalism and racism

I think it's a more coordinated and professional operation that you are suggesting. The US and even western Europe in general has been constantly hammered by Russian bots and professional accounts spewing all sort of extremist and sensationalized content that is aligned with the Kremlin's agenda. It's not limited to Twitter too, as places such as Reddit's conservative subreddit is renowned for being mainly a Russian psyop with barely any US citizen posting there.