I'm going to mention this conversation I've had with this professor (which was borderline flirty but I gave him the benefit of doubt) to another professor and people in my class
What did you hope to accomplish by having this conversation with the professor?
I told him about me being depressed. He responded by saying "I'm sure most of the people around here are."
You can't help if you feel that way about your professor. But don't be reading between the lines and making assumptions based on rumor.
I'm going to take this to someone on the student council and to a public security office.
You should be sure that your professor has said something inappropriate before you report it. If there is no doubt in your mind then you are right to tell someone about the situation.