After the National Rifle Association endorsed Mitt Romney for president last Thursday, the group aired its first TV ad of the 2012 election season attacking President Obama.

The new ad accuses Obama of “chipping away at your rights, chipping away at your freedom.” The NRA’s political arm, NRA Political Victory Fund, said it would spend about $1.5 million this week to air the ad in Ohio, Virginia, Florida and Wisconsin, all critical battlegrounds. The group said it planned to air TV ads in swing states through Election Day.