Does this line of reasoning always work though? Would you mind using Dropbox if they hired a convicted child rapist, or a white supremacist, as a member of the board and a likely spokesperson for the company?

Or is it just that you personally consider that the past actions of Ms Rice weren't a big deal, and that you don't understand why anyone would feel differently?

But holding people responsible for their questionable political views happens all the time; in 2010 Rick Sánchez was fired for calling Jon Stewart "a bigot". Once. Outside of his regular show. Were you upset then? (Maybe you were, I don't know; but it seems you should have been.)