If you are even a mildly public figure working in a domain Trump has demonized over the last few years, you have seen the email messages grow more frequent and more threatening. It is honestly surprising we have not had more direct acts of political violence.
The Emory shooter was a regular visitor to right-wing social media accounts which persuaded him that the Covid-19 vaccine was to blame for all his personal medical problems. So he took his gun to shoot up the CDC, killing a policeman in the process.