CLEVELAND — It’s getting warmer here at the Republican National Convention, and tensions are rising. On Tuesday afternoon, right-wing conspiracy theorist and radio host Alex Jones strode into a crowd gathered in Cleveland’s Public Square, drawing the attention of Trump supporters, the media, and members of the Revolutionary Communist Party, who screamed in his face: “Off our streets, Nazi scum.” Caught in a scuffle on the stone steps leading up to the speaker podium at the south end of the square, Jones was quickly and unceremoniously ushered out of the scrum by police.