For kidnapping, the person would have to sequester you and not let you leave. For stealing, they would have to physically take you car. It would probably get towed but I’d hardly consider that stealing.
I get the point you’re trying to make but the way you are going about it is kind of silly.
It’s also important to note that blocking traffic is a form of peaceful protest. If our politicians would listen to strongly worded letters or what the population wants, they wouldn’t be needed.
Stop being part of the problem. Learn what’s in your best interest and stop being easily manipulated. Like how often do you get caught in traffic because of a protest? I bet it hasn’t even happened to you but the media told you to be mad about it so you are.