When the unpleasant visitors began to dominate, mall owners (the malls I'm familiar with anyway) didn't provide the security necessary to prevent the environment from declining. When book stores and other higher-end stores left because of the new environment, the decline was irreversible.
This obviously coordinated activity by BLM-types will probably backfire. Malls on that list I'm familiar with are the destination of the "it can't happen here" elite clueless liberal types. My suspicion....a lot of them will embrace their inner Deplorable, now that it's in their backyard.
Pure speculation....one has to wonder if this is a trial run for potential inauguration capabilities to wreak havoc.
I doubt security can solve this problem. You can’t ban every group of potential troublemakers. I know of a mall where the decline started because of groups walking around with intimidating attitudes. No fights or riots, just creating an uncomfortable atmosphere caused many to stop going there. That mall eventually closed.
It’s complicated and I don’t there is an affordable solution in some locations.