special treatment?

i work in a nursing home where alot of the staff are related in some way. not long ago there were 3 employees who posed for pictures in a resident's room wearing that resident's briefs. they then posted their pictures on a certain social network. here's the kicker. the one that took the pictures was closely related to the DON. nothing was done about this and all 3 are still working for this facility. this was a dignity issue and i would consider this abuse. but the worst part aside from these idiots doing this in front of the resident was that they were not disciplined for this at all because of who they were yet they would fire a good worker over hearsay from another employee without proof of anything. they had proof of what these 3 did right in front of their faces yet they did nothing. i would like to know if there is anything i can do about this or if there is any certain person i can call to have this reported. any suggestions? this is not the only thing that has or is going on in this facility.