In 2008, a suspected anarchist threw a molotov cocktail at the Texas Governor's Mansion, burning it down.
In 2010, a Marxist flew a plane into an IRS building in Austin, TX.
Also in 2010, an anti-war Democrat opened fire at the Pentagon.
Also in 2010, a climate change activist took hostages at the Discovery Channel, blasting them for not doing more to fight against global warming.
In 2012, a leftwing activist entered the Christian Family Research Council intent on murdering its employees.
But the media and Democrats want you to believe it is uniquely in Trump's America where leftwing activists are violent. https://ewerickson.substack.com/p/leftwing-violence-started-after-obama