Engaging in hate speech is not illegal. Lying is (usually) not illegal. But when hate speech is used to motivate people to make donations or to vote in a particular way, there are unintended (or perhaps intended) consequences. Anyone who engages in such behavior is unfit for public office, by definition. Such a person does not serve the public, by definition.
The three men (since taken into custody) who tried to kill Burke Burnett, pictured at left, were acquaintances of his. They attacked him at a community Halloween party because he is gay. You can read the things they said during the attack in the linked articles. Burnett has been openly gay in his small Texas town since he was 15.