The workplace often offers built-in grievance procedures, tied to policies or laws, which can be used to respond to some forms of everyday bigotry. You need not file a lawsuit to have such a policy be effective; many roundtable participants spoke of invoking such policies when speaking up, saying the mere mention carries weight.
Power, too, comes into play at the workplace. The dynamic of an employee speaking to a supervisor is very different than a supervisor speaking to an employee. Likewise, an executive's tacit acceptance of bigoted remarks can create an atmosphere where bias thrives — just as one powerfully placed comment from that executive can curb everyday bigotry in significant ways.
Who sets the tone at your office? And what leverage do you have with that person? If you lack leverage, who has it? And might that person be an ally?