Jan 6, 2021, invasion of the US Capitol in an attempt to stop Congress from counting electoral votes as part of the process to confirm Joe Biden as President. The mob had erected a gallows and were chanting “Hang Mike Pence!”
Mike Pence was Trump’s Vice President. Trump insisted (confidently incorrect) that Pence had the authority to reject the electoral count. Pence refused to do so. Trump expressed his “disappointment” in Pence during the Capitol invasion, directly leading tho the above.