Trying to over turn an election and zip tie members of congress is an insurrection.
I guess the gallows was because they thought it was Halloween?
https://www.cbsnews.com/news/jan-6-gallows-construction-new-video/
The people who erected the infamous gallows and noose on the west front of the Capitol on Jan. 6, 2021, began their work in the predawn hours that day, according to newly released videos obtained by CBS News. A report by a GOP-led U.S. House subcommittee said the perpetrators remain unaccounted for by prosecutors.