I trust his parents never saw this video. Otherwise they would have had him committed. (language)
https://x.com/smulderry1/status/1812620849796555193
That video is apparently not the shooter but a student at ASU.
https://www.dailymail.co.uk/news/article-7974217/amp/Shocking-moment-ASU-student-yells-Slash-Republican-throats-Trumps-acquittal.html