Conservatives beware! I was assaulted by a store cashier to silence me

I was in the checkout line at a grocery store. The cashier, an older white woman, asked if I had their shopper club card. I politely tell the cashiers that I would rather not send my personal information elsewhere as those cards are surveillance tools. She flew into a rage after she said something about the TV dinner I was buying and that I needed the card. I asked if she was going to refuse to sell my goods without the card and then she slammed my change into my hand, hard. This is assault, and it has been reported to the police. Apparently, the store supports what she did as they are ignoring my requests to deal with it.
I am hoping that is is an isolated incident, but I doubt that it is. Be careful. These businesses may be trying to silence our opinions by using physical intimidation and even violence.