Michael, there are many articles online from prior to 2010 that discuss how the term "tranny" is offensive. Maybe you don't feel it is. Maybe people in your social circle thought it was acceptable. But that does not excuse it. It's one thing if members of the trans community use the word for themselves, but for a cis-man to use it even in 2010 in a derogatory manner (which Rainbow's tweets are) wasn't ok.
And if you don't think the use of "colored people" by white people was a problem 50 or 60 years ago, why is it (and was it) so jarring when Nellie Forbush used it to describe Emile's kids in South Pacific?
