What is hate speech? Can hate speech be an overused term? Can there be debate about what qualifies as hate speech? Clearly the answer to these questions is yes. We're way beyond that, though. The events in Chicago were over the top, and truly dangerous. Anyone who fails to see the relation between Trump's hate-filled rhetoric and the mob mentality of his supporters is turning a willfully blind eye to the truth.
The tragedy of our current political dynamic is that the anger people are feeling is so justified and so completely misapplied. Our political representatives are wholly co-opted and offer no real representation. So punch another citizen who is also angry. Blame people who disagree with you. Don't blame the system which offers no real choices. Don't recognize divide and conquer tactics. Allow the true strength of the country to be diluted. What a tragic waste.
In defining hate speech, IMO, it is imperative to differentiate between something that is innate and something that is a choice. Further, if it is a choice, the differentiation needs to be made between choices that are harmful to others and those that are not.
Being born with a certain skin color or gender is not a choice. Religion, on the other hand, very much is a choice and so is we cannot differentiate between that which is immutable and that which isn't, we only end up sanctioning much that IS harmful in our zeal to avoid the very hatred we think we are fighting.
Being gay is not a choice, and gay people do not harm others as a bi-product of their being gay. As such, the prejudice against them is unwarranted and when speech rises to a level where it threatens them with harm, it is hate speech. Those who follow a religion, however, should be able to be criticized openly and honestly because they have chosen to hold certain opinions. If those opinions harm others when acted upon as is the case with so many Islamic beliefs, for instance, then calling the reaction to them "hate speech" not only misses the mark by an enormous degree, it actually serves the purpose of the hatreds, themselves.