Question: Police Budget Request

I've a number of questions in reference to police interactions with critical mass. I want to do a small outreach campaign to two groups, the general public and the police themselves. Here's what i'm looking for:

I want to see how much has been spent on critical mass harrassment: budget, expenditures, whatever documents i can get the better. If i have to do a FOIA, what documents do I request, and to whom. is the police budget part of the public record?

Does a police officer have any protections to disobey a legal order?

What whistleblower protections do police have?

thanks