JIM GERAGHTY: “This Fourth of July, a lot of grassroots activists will be holding their second round of tea parties – 612 at last count. If you attend one this weekend, go, enjoy yourself, get fired up, take reassurance and confidence that you’re not alone. But, if I may make a recommendation, try to walk away with something of a plan. . . . Hopefully, Tea Partiers this weekend will come away with plans to attend city council meetings, Congress member’s meet-and-greets, their town-hall meetings with constituents. Don’t be rude, but be firm.” Good advice.