He isn't the only one. There's video of MPD officers fistbumping Proud Boys, and looking the other way/doing nothing while Proud Boys were assaulting random people in the streets of DC, there was the incident of MPD officers heckling Fanone at the Congressional Awards ceremony where they recognized the defenders and the injured police officers.

MPD has a problem, I do not at all think Lamond was the only one, they need to do some serious house cleaning.