"A bit extreme, but I think as a parent I should have the right to limit what I want my child to be exposed to. The main problem with the nude bike rides is that people were unaware they were going to happen."

You have the right to stay home, block tv channels, etc.
I suppose one could say it's like fishing regs.....it's up to the fisherman to keep abreast of changes. In other words it's up to you to keep abreast of what is going to be happening and where on stuff you wish to avoid.

Like me....I don't go to bars or taverns anymore because I can't stand most drunks. I don't go to Seattle much especially places like Capitol Hill, because I choose not to be around attention seeking freaks....my choice.

"I see nothing wrong with drawing reasonable limits."

We have drawn limits mostly on things that restrict another persons liberty. I don't see you seeing someone nude as restricting your liberty however. It's not as if you were cornered and forced to deal with it. Blocking someones progress via the freeway or a clinic is restricting someones freedom. You get arrested for that.