No body is "cheering" anyone's death. We are merely amused by the irony of this person's demise. If this person was Canadian, Italian, English or several other nationalities this thread may not exist or would likely have another sentiment.
But when the individual who died in this fashion has an agenda to use the very freedoms provided by Americans, to destroy Americas way of life; some of us have a hard time showing empathy.
"Government is the great fiction, through which everybody endeavors to live at the expense of everybody else." — Frédéric Bastiat