I don't currently have any cats inside my house (I have a couple outside that have adopted me, and they can't come in because the pup will eat them), but years ago, when I had turtles, I found a kitten in my backyard. The kitten, Creepy, used to crawl inside the turtle tank and sit on the sunning stone, and hang out with the turtles. He would touch their shells, but he never hurt them. Not that I recommend this as a safe behavior! But, when I was younger I thought it was pretty cute.
The only cure for ignorance is education, and bullying or attacking someone is no way to educate them.