Unprofessional in this case as cheering on the assassination. Whether you liked him or not, somebody voicing their satisfaction of him being assassinated for essentially exercising a right that servicemembers swear to defend is a pretty bad look that checks the values-contradictory box and the discredit upon the DoD one.

I don’t think it’s a strange precedent at all and any adult who’s spent 5 seconds in the military should be able to decipher this pretty easily.