Speaking as someone who works hard on my magnets and sees my door display as part of our personality that I'm wanting to share with our neighbors, it would be very hurtful to find that someone had messed with them. I understand that you felt it was just good fun, but, I'm sure now you realize that it wasn't 'just good fun', but disrespectful to those who wanted to share something of themselves with other cruisers.
While people shouldn't be judging others by a few minutes or seconds of video, the fact is, they do. They see this type of behavior and have little else to judge you by. Should they judge you at all? You've put yourself on the internet to be judged. That is the sad side-effect of our wired world.
We all make mistakes in life and do stupid things. However, with the advent of YouTube, so many things that should be forgotten are put on public display for life. It's like the world no longer wants people to forget their past mistakes. And worse, people can be judged by adolescent behavior and attitudes long after, when those years should only be fond memories. I advise my boys not to put anything on the web or record anything that they wouldn't want a potential employer to view. And now, more than ever, I also have to tell them to make sure their public behavior is nothing they wouldn't want on public display. Kids do need to be kids, but the world and technology is what it is.
So hopefully, this will be something you can put behind you. You said you were removing the video, but maybe, just delete the part that was upsetting people.