Thanks for explaining why you used the "most cities" argument. I don't know how you define that cities"get along just fine"  without a civil rights group since some at least face legal challenges because of discrimination, but that's an issue you provide no evidence for. 
When you say "we all do that," do you mean we all lock our doors to gather ourselves because we might be deported? Of course not. So you are focusing on locking a door (like we all do) with WHY one locks a door. 
For instance. Let's say I live in a crime ridden neighborhood. My neighbor had a home invasion because he had no locks. I ask for my city to pay for a lock. Would your answer be it's not warranted because "we all lock our doors"?