Obama assasination would be the worst possible thing for the liberty movement.
1. If you think an Obama presidency would be bad, you havent seen anything than what would be passed "in Obama's memory" should he be killed in office or before taking office.
2. Riots followed by more police state (which sadly most GOP would support since it would be "crazy leftists" that were rioting.
3. Who would they blame? See: Vast Right Wing Conspiracy
4. It is never a good thing when the will of the people is overturned by an assassin's bullet. We will collectively get the collectivist leader we deserve. Sadly we will have to collectively suffer the consequences, imo.
If those four reasons aren't enough to make you TERRIFIED of the possibility of Obama being taken out, I can probably come up with more.
Long live President Obama, may his life be long and his presidency short (4 years or we can always hope he does something impeachable)