The vandalism that took place at civil rights/BLM protests was completely counterproductive in my opinion. I understand some of it was a result of frustration at the lack of progress. But, I think most was simply gratuitous destruction and pillaging.
That said, comparing it with the insurrection in Washington is like comparing apples and oranges. One involved the localized destruction of property. The other was an attempted coup, resulting in the destruction of the country's democratic system of government. One may look physically worse, but the consequences of the other for the nation would be much, much worse.