Republican vice presidential nominee J.D. Vance blasted Democratic vice presidential nominee Tim Walz for a “dark and ominous” acceptance speech. Following Walz’s speech at the Democratic National Convention on Wednesday, Fox News asked Vance for a reaction. “Well, look, my response to this is they cannot say that Kamala Harris has lowered your grocery prices because she hasn’t,” Vance opined. “What they can say, Brett, and what so many of the speakers did, including Tim Walz, is basically say that if you want a better life for your children, if you want to vote for Donald Trump to change the …