This is the Obama camp ad:
Mandatory – Obama for America TV Ad
Coal miners tell Obama to stop the absolute lies in TV ad accusing miners of being props at rally for Romney. Miners held a press conference to release a letter signed by over 500 miners saying they were not forced to attend Romney event. They wanted to attend because their is a war on coal and Obama is leading it. If Obama is re-elected he will put us all out of work permanently.