Don't blame you one bit for being pissed.
Old,shitty game camera in plane view,with another cam watching that one plus your spot if you can. You might just get a pic of someone stealing it or trying to disable it.
And if the intruder has a firearm in his possession . . . that is a felony . . . at least down here.
I hate to see shit like this. I have had to deal with this several times in the past. One recommendation - -> as you stated,get law enforcement involved. --- SAWMAN