Not to mention that the person who attacked Pelosi's husband with a hammer was also posting transphobic crap (along with a lot of other right-wing garbage). Hate online definitely has real world impact.
That's very common. There are a number of mass shooters in the US that targeted minorities who explicitly say in their manifesto or interrogation tape, that they were radicalized in online forums, and not offline.
There’s a lot of hate in the history books, 99% of it predating the internet.
Are those that engage in hate online more or less likely to act on it than those who engage in person? Are these interactions compelling them to use their voice off-line?