I'm curious if this is a unique problem for tech workers. I'm sure if you look at conferences from any field there will be incidents of sexual harassment. Is this a problem unique to tech or a general problem of idiot men working with women?

I've worked mostly in corporate environments. If I had to characterize a type that was in need of sensitivity training, it usually wasn't the tech guys, it was the "business" type (marketing, finance). Of course that's just my experience.