AUSTIN, Texas — The largest anti-abortion rally in the U.S. returns Friday with thousands of expected protesters in Washington who feel within reach of their goal for the last 49 years: a sweeping rollback of abortion rights.“My hopes have been dashed many times, but I have never felt like this,” said Joe Pojman, executive director of Texas Alliance for Life.The March for Life, for decades an annual protest against abortion, arrives this year as the Supreme Court has indicated it will allow states to impose tighter …