Welcome to one of my previous workplaces. If you were Christian, white, male, able-bodied and straight, then you were ok. I only got the job because I was a previous customer of theirs and didn't know the working culture at the time. As time went on, I got bullied on 2 fronts - disability and being a non-believer.
Although I didn't know what a union was at the time, I was advised by the MD not to join a union. I didn't think much of it at the time, but hindsight eh.
Sweeping assumptions were made as well such as me being into witchcraft because I liked Harry Potter and being a druggie because I liked clubbing.
A gay friend couldn't come out because of this workplace.
In a redundancy round, they got rid of nearly all of the women, leaving only 3 women left and absolutely no one of colour at all.
There was even in-fighting between the different Christian denominations.
I had 2 bullies and it took nearly 2 years to get rid of them in another redundancy round, but it was too little too late. The company folded 3 months later. I had to get the redundancy money from the government in the end because none of us got redundancy pay.
I'm in the NHS now. Busy busy busy, but I'm in a better place.