The paramedic says that he did not mean to hurt his brothers in blue or offend anyone??? Congressional Record! He did both, and meant both, and probably still means both.
He does have a right to free speech, and I would propose an evaluation as to whether he is appropriate in his current job, just as anyone else would be if they said something threatening aimed at the police. or the paramedics.

That is a visual threat. It is condoning what it depicts. And the paramedic is a liar.