BC is a privileged pair of letters, which often go after numbers. If you use it, you are oppressing at least 4,004 years (to as much as 6,000 years, if you believe certain people. Anyone who says the earth is billions of years old should be locked up). You wouldn't want to be an oppressor, would you?
Good, use BCE instead. Zero non-oppressors use BC. By the laws of political correctness, however, BC is considered more acceptable, due to BCE having something of a PC air about it. 'Let's not offend Christians...' they said. 'Let's not appropriate their culture'... did it work? No. They are too low on the hierarchy.
The Diglett BC
You wouldn't want to go there.