Telling a joke is risk taking. Younger people are more insecure and not willing to put themselves on the line, so a quick one-liner is much safer.
Abortion is a hard thing for Hollywood to deal with because it is so controversial and you don't want to alienate half your audience by sending one message or the other.
Americans have a lower opinion of Congress than they do of the NFL replacement refs, head lice, traffic jams, cockroaches and even the group to which yours truly belongs - Washington political pundits.
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