I have seen multiple videos of people on the right engaging in violence to stop someone on the left from burning a US flag.
Took me a minute but I found a specific example that you requested.
Maybe you just don't look for them? Took me 30 seconds to find this one.
Not really the same thing, I am talking about violence and aggression. A restaurant owner can set a dress code if they want.
I think people find and get fed the videos that get more attention to them. The video of a Trump sign vandalized gets more attention from you than the video of a Biden sign getting vandalized. It also sticks with you more since it is happening to your side.
The videos i usually see are where the sign thieves or vandals are caught and identified as leftist/anti-right political idiots. I've seen them get shocked, destroy their vehicles while running over signs, and videoed and identified as left-wing supporters, often just a neighbor jogging or walking the dog.
As the video you posted admitted, this last presidential election was highly unusual for so many democrat signs to be stolen or destroyed. Let that sink in first -- not a "happens on both sides" comment at all. Second, you have to consider whether democrats are also destroying democrat signs, not just republicans doing it. Biden was a horrible choice for reelection. Then, when Harris took his place, all those who supported Biden had to honestly come to grips with how bad their party really is. I can see many of them disillusioned to the point of taking/trashing signs for Harris (including Biden/Harris signs that were sill up).
As the lady said, and as I said, these videos are mostly vandalizing of Republican signs. And the videos you posted don't prove otherwise. The BLM video is a one-off, someone who wanted clicks on YT. Otherwise, s/he would not have been so overt about it. Going after a BLM road painting is no where near the same as attacking a stranger over their apparel or stealing signs for a political party. BLM is not a political party -- they are a gang of scammers who fleeced supporters out of millions to spend on themselves.
As for someone attacking someone in a restaurant for wearing Trump apparal, WTF? A dress code? That's go nothing to do with it. Lame.