Earlier quoted context omitted.
And where do you draw the line? Are you going to defend people that oppose Women's Suffrage too? What about slavery supporters? These were just political opinions once too. But today you'll find that they get you fired as CEO. And for good reason: blacks and women (and gays) are your customers and employees and business partners.
The classic reference here is "On Liberty" by John Stuart Mills. http://www.bartleby.com/130/ He persuasively advocates that the line shouldn't be drawn based on the acceptability or reasonability of the opinion, but on whether the behavior is mere communication (i.e. leaflets, speeches, opinions, blogs, TV ads) or actual action . In particular, when the causal influence of the alleged wrong doing propagates through…
If this were not the case, then conversation/debate would not be possible.
In other countries with hate speech legislation, Eich's right to speak out against civil liberties might be restricted. However this is not the case in America, he is free to say whatever he pleases (although his actions are restricted, and if he commits an illegal action his (otherwise legal) speech may be used to make the case that his action was a hate crime).