There's nothing ethically wrong with "wishing" evil on someone.
Wishing never hurt anybody.
However, insult, ridicule and ruining careers and reputations IS evil, and it inevitably leads to much worse; humiliation, threats, and intimidation. And anyone capable of THAT is certainly capable of inflicting violence, injury and death.
These people have already shown themselves to be ready to justify anything. Wishing them a little inconvenience is the least we can do.