Your sentence is weird. I take it that you're trying to say that other conventions don't get bomb threats? Because threats of violence, harassment, protestors, and so forth.. also show up at other events.
Psychology conventions/events get protestors and threats. There is an entire "religion" dedicated to getting rid of psychology and psychiatrists. I've seen Labor Union protests at Car Shows/Conventions. But none of that is smoke and mirrors. The bomb threat at this event isn't smoke and mirrors either. Some people are just sick. They make up a very small portion of the population, really; but every single one of them has the potential to make everyone miserable. So, we should take these threats seriously, every time. We should condemn the people that would make these threats, every time.
No one deserves to be violently killed or assaulted.
Also, if these people hate Anita or Zoe so much, why would they want to make them into martyrs? That's counter-intuitive to their "revolution."