www.google.com/amp/s/www.thejournal.ie/history-lecture-zoom-5690981-Feb2022/%3famp=1
An online lecture for a County Clare historical society by a Gender Studies lecturer, on the topic of violence against women and girls by both sides in the Irish War of Independence, had to be cancelled after several men crashed the zoom and began interrupting with sexist abuse, pornography, etc.
The moderators tried to block them but couldn't and so the talk had to be shut down.