The Oakland teachers union endorsed Wednesday’s strike and is urging members to take a personal day and participate.

Do Oakland teachers care about the city’s tax base? Do they ever ask themselves whether employers might be watching this circus and decide they don’t want to set up shop in Oakland?

On Sunday, City Hall issued an advisory that stated, “We continue to maintain a minimal police presence at the Plaza.” As if that were a good thing.

The mayor’s office released a statement that said, “We are not urging businesses to close on Wednesday. Instead, we advise that you use common sense precautions.”

A mayor ought to be assuring businesses that law enforcement will protect them from people who break the law. Instead, she’s waving a white flag.