I'm actually ok with it. The guy took the risk and had what's coming to him. The alt right openly claims to be "redpilled" on race, how certain races are inferior, and that the country would be better off without them. It's all there on sites like dailystormer, 4chan, etc
So if you openly identify with the movement and you work in a customer service role, I'd think it's normal for a potential customer who is a minority to feel uncomfortable. Yeah it was probably some edgy, white knight got behind a computer across the country who outed him, but I don't feel bad for him for getting fired.
Like DMC said, these guys have to know it's coming if they put their face out there in public. I know the guys who run the dailystormer live off the grid and are constantly moving around the world to avoid detection