Because stopping them requires more force than the twenty first century public is willing to accept.
Nevertheless, none of these compare to what happened at the Capital during the certification of a national election. Not in importance or impact or history.
That's horseshit.
The people, in charge, the mayor's and governors declined to do anything about these riots because these riots were not against the establishment, they were sponsored, funded and organized by the democrat party. On behalf of the establishment.
These riots were not marginalized people protesting across the country for rights. These were college educated university bred political activists financed through the democrat party political action committees and vote blue npo's.
At the same time, democrat party politicians were often marching with and taking selfies with the rioters. They set up bail funds for the ones who got arrested. BLM took in millions of dollars from organizations like Facebook and Google, and a big percentage of that went to the democrat party and vote blue npo's.
When a man in process of fighting the police and kidnapping two children was shot by the police, and Joe Biden went on television saying "these shots pierce the soul of our nation" "we have to fight for our future" he knew what he was doing.
When Kamala Harris met with Jakob Blake and his family all doe eyed and teary calling him a hero and saying she was proud of him she knew what she was doing.
The people who craft these statements and events are well versed in human psychology and knew exactly what they were doing.
They were calling for violence and chaos. And thier foot soldiers answered the call. Thier on the ground organizations like BLM and antifa were sent and directed by democrat party operatives, praised and encouraged by democrat party leadership and financed by democrat party npo's.
That's why nobody stopped them.
So cut the bullshit and call it what it is.
The only difference between that and the capital, is that one was on behalf of the democrat party and it's quest for power , and the other was opposed.