I helped hide the decorations for the upcoming Christmas parade
Are they supposed to be hidden or are you trying to vandalize the decorations by hiding them?
It's all because of what happened at least years Christmas parade. My reputation was ruined so I want to ruin the parade.
That's a really mean and rude thing to do. You're ruining an event that a ton of people are looking forward to. Just because something bad happened to you at the event last year doesn't give you the right to ruin it for everyone else.
They are a bunch of cunts that ruined my reputation for no reason.
Even if they are at fault, you're in the wrong to be retaliating against the parade. If you are being bullied or harassed, then you should do the proper thing and report them to the police or your HR, and not actively ruin an event because you felt you were humiliated. I do hope you don't act on doing what you're planning and just probably skip the event if it brings you bad memories.