I think it has less to do with social media poisoning and more to do with bribery, coercion and outright fear.

www.vanityfair.com/news/story/trump-congress-political-violence?srsltid=AfmBOor7t98zN0nflD_Sc5OcU5BO-BWwfG56eWRC4ht7vHGfCAg4xcWn