Do Jews support abortion en masse? If so, why?
I don't know why. From the Jerusalem Post:
The lopsided liberalism of the Jews shows up in their responses to issues on the public agenda, particularly on abortion. Jews are overwhelmingly pro-choice, with 61 percent saying the decision should always be left to the mother. Among other groups, the figure ranged from 40 percent of blacks and Asian Americans to 29 percent among Italian and Arab Americans and 24 percent of Hispanics who were fully pro-choice.Similarly, fewer than 50 percent of Jews believe in notifying parents when a minor seeks an abortion, compared with nearly 80 percent in every other group.
Press releases from the National Council of Jewish Women:
NCJW Praises Supreme Court Decision in “Partial Birth Abortion” Case
NCJW Concerned that Stem Cell "Compromise" Could Slow Medical Progress