Gay men should be prohibited from going places around children as a matter of policy, and probably given twice the penelties as normal for violations or if they are caught trying to actually go after children. By a lack of active tracking I mean I don't think an entire neighborhood needs to be informed that so and so is gay, but I do think schools should be basically informed, and it should be attached to IDs so if say some gay guy comes into a casino and gives his ID to be allowed to gamble casino security is aware, and can also inform the guy where to stay away from (arcades, day care, etc..) to prevent accidental tresspass and similar things.
Overall while many people would object out of hand, this is an attitude that has come from long experience, and I've gone through periods where I've been more or less extreme. This seems like a pretty middle ground compromise as it presents few limitations. To be honest as a straight guy I don't hang around schools, playgrounds, arcades, etc... unless I have a good reason (like being paid security) so really being told you can't go there isn't something that is going to hamper most people unless they are up to something to begin with. It's very much one of the cases where I actually think the maxim "only the guilty should be concerned" kind of applies. Some would talk about railing against any kind of limitation, but at the same time I'd ask WTF would an adult man with allegedly no interest in kids fight for the right to go hang around a playground or children's arcade? I mean seriously.
... and trust me, from experience, if you see some solitary guy hanging out in an arcade watching the kids there is very rarely a good reason for it. Sadly you can't do anything out of hand, but trust me, after about 10 minutes you can almost guarantee your going to have to at least step in and make your prescence known at some point (at which point the guy will almost universally go scurrying like a cockroach).
Part of it is what they called "colored glasses" when I took Criminal Justice. Basically people remain optimistic and liberal because they never really see the world properly the way how someone who does law enforcement, "high end" security work, or receives the proper training does. See, you take the right training, watch people through cameras when they don't think they are being observed, and respond to incident after incident and write (or read) report after report, you see things as they actually are, and can recognize behaviors you once wouldn't have been alarmed by for what they are.
Criminals an predators survive because they seem normal, your child molester, shoplifter, pickpocket, stairwell rapist, mugger, or whatever doesn't look like some dude from America's most wanted. He looks like your ordinary person, and can talk a good game about being harmless. Most homosexual predators for example are EXACTLY the guy who looks like the poster child for "we're unfairly maligned, and don't attack children" they don't go walking around covered in tattoos and looking like prison rapist nightmares, or dirty old men. Just like a shoplifter might be an old lady who looks like (and probably is) someone's grandmother, especially if it's part of an organized ring because people tend to be a lot more laid back with the elderly not to mention all the special laws about treating them with kid gloves and so on. You watch this crap 20 million times on a camera and it burns in.
While I'm rambling in a long post, I might as well explain how this kind of thing works as well. See, little boys are braver than girls and have immortal action and adventure fantasies in their head, they are warned, and take warnings less seriously than girls who tend to be a bit more aware of people being after them probably because people teach them more seriously. Your typical gay pedo is going to be some normal looking guy in his 20s or 30s, maybe even good looking, who hangs around an arcade or similar place, to see who has been left without parents or a sibling, and hasn't fallen in with another pack of kids. Or more indidiously for those carrying books, because kids have homework and a lot of your casino parents will have the kids their kids bring the homework to the casino. Basically the pedo will probably play a few video games, offer the kid some extra quarters or something, and then when the kid runs out offer to help him with his homework. The kid probably wants to go somewhere quiet to concentrate with a flat surface so it's pretty easy to gert the kid to enter a stairwell, where the cameras tend to be aimed at the landings. The pedo gets the kid into the stairwell and then goes to do homework with him in the middle of the landing where they can sit, or the kid can *ahem* turn around and use the steps as a flat surface. In that position it's where the pedo can do his thing and unless a security officer comes by on a patrol, at the right moment your going to find the traumatized lad crying with the guy long gone. Even if you find him, because it happened between landings there won't be a great video record since the act itself took place between landings. This is assuming the guy didn't mess with the cameras and security wasn't too busy to notice (given that there are tons of them). Now granted this rarely goes down, because well. there are procedures that make it harder to get away with, but really you'd be shocked how many normal looking dudes have tried to carry out that basic plan.
