After all, they're experts at turning random radio static into plain English. This should be easy for them.

a hard C. I hope this nails him for a hate crime.

He's clearly lowering his whisper even more as he says the slur, thinking about what he's saying most likely.

.....with the network's sound engineer. They manipulated the clip in various ways to make it more clear. Sounds like the "c" word to me.