I'm sure there are "some" instances where blacks were denied services.
However, I think denial of services aren't as wide spread as you let on.
consider the "sit in" at the local diner. Blacks weren't denied services there, they were denied internal seating.
They could, and did very often order their food from a window out back.
Equality, no, but you'd be hard pressed to find a diner anywhere in the south that didn't work that way.
Most towns even had blacks only diners that whites weren't allowed into- I don't see you crying about the harm from their denial of services.
There were public water fountains, one for whites, one for coloreds.
Please tell me a service that they were denied!
I can't think of any, they often had to accept substandard service, but rarely were they left with no options, if ever, to get a bite to eat if they had cash.