The right to free speech wasn't intended to protect "love speech". Popular speech doesn't need protecting; unpopular (often rhetorically construed as "hate") speech does.
Why only protect popular speech? The whole point of "right to free speech" is that one may earnestly believe something that another may earnestly take offense to; the state shouldn't be able to punish someone for saying something another simply doesn't like (say, "abortion is murder" which may understandably offend someone who had an abortion and be construe the comment as "hate speech").
