CBS News has learned of a shocking link between a deadly drug cartel shootout with Mexican police last week and a controversial case in the U.S. The link is one of the grenades used in the violent fight, which killed three policemen and four cartel members and was captured on video by residents in the area.

According to a Justice Department “Significant Incident Report” filed Tuesday and obtained by CBS News, evidence connects one of the grenades to Jean Baptiste Kingery, an alleged firearms trafficker U.S. officials allowed to operate for years without arresting despite significant evidence that he was moving massive amounts of grenade parts and ammunition to Mexico’s ruthless drug cartels.

Grenadewalker, like Fast and Furious and Gangwalker, appears to be yet another plot by the Justice Department to manufacture violent crime in order to infringe upon the rights of American citizens.

Why Eric Holder is leading the Justice Department instead of being prosecuted by it is something I’ll never understand.