From memory and a couple quick Google searches

• January 6th, including both the violence at the national Capitol and related, often violent protests outside verious state capitols
• Death threats to election count and poll workers
• Republican legislator invites armed men into the Oregon State Capitol during a protest
• Armed protestors rally around the tallying center in Detroit while the count was ongoing
• Brawl with counterprotestors at the “million Maga march”
• Violent “Stop the steal” protests in Sacramento

I wouldn’t say there was just a little violence after the 2020 loss