I wish bill maher would get hit by a speeding truck head on while walking across a street
Why do you want that to happen?  Do you think things would be better if that happened?
It would be nice if he was to get hit by any truck.  He deserves it
It's wrong to wish death upon people just because you disagree with them.  You wouldn't want anyone to wish for your death.  And besides, even people who generally agree with you will find your desires to be mean-spirited and cruel.
I think he should kill himself by jumping off a tall building.
You may not like Bill Maher but you can't be openly wishing death on him. People don't want to be around mean-spirited people.