I am NOT defending whoever did that to the manatee, but to be fair it might not have been harassed or restrained in the doing of it. A long, long time ago, we were launching our boat and tied off at the dock to finish loading up, and for craig to park the truck and trailer in a state park very early 1 morning. We were the only ones there. Next thing I know, the boat is being bumped. It was a manatee that came over to say hello. I reached out to touch it and it pushed back against my hand, so I started being a little more aggressive in rubbing. It kept pushing back against my hand, so I started scratching it like you would your dog. Well, that's what it wanted. It moved around so I scratched its whole back and then it rolled over for me to do its belly and sides. It kept moving around for me to scratch different areas. Craig had come back during the scratching and had petted it some. We finally had to get out of the boat and walk away from the dock, since just ignoring it didn't work, it kept bumping the boat and didn't want to leave, and we didn't want to start the boat with it hanging around, being afraid that it might panic and get hurt, and we did want to get out and start our dives because we had planned on making several that day, which is why we were there so early.
If you look at the picture of the Trumped manatee, it looks like it was scratched into the algae on the manatee's back, so there is a possibility that the poor thing just thought it was getting a nice back scratch, instead of becoming a political billboard.