ABC's World News on Tuesday night bemoaned the impact of conservatives and citizen journalists in derailing President Barack Obama's agenda. Pivoting from the reaction to Obama's address to students, anchor Charles Gibson observed “today's speech was really the latest target of some conservative groups taking on the President” and “their tactics are having an impact.” Reporter Dan Harris asserted “the conservative echo chamber is not new, but,” he fretted, “this White House is operating in a vastly accelerated media environment where you no longer need to be in the presence of reporters to make news, as we saw with the...