Maude would also earn a place for Arthur in the history of the women's liberation movement.[9] The groundbreaking series addressed serious sociopolitical topics of the era that were considered taboo for a sitcom, including the Vietnam War, the Nixon Administration, Maude's bid for a Congressional seat, divorce, menopause, drug use, alcoholism, nervous breakdown, mental illness, abortion, to spousal abuse. A prime example is "Maude's Dilemma", a two-part episode airing near Thanksgiving of 1972 in which Maude's character grapples with a late-life pregnancy, ultimately deciding to have an abortion.
Even though abortion was legal in New York State, it was illegal in many other regions of the country, and as such sparked controversy. As a result, dozens of affiliates refused to broadcast the episode when it was originally scheduled, substituting either a repeat from earlier in the season or a Thanksgiving TV special in its place. However, by the time of the summer rerun season six months later all the flak had died down, and the stations that refused to air the episode upon its first run reinstated it for the reruns the following summer. As a result, a reported 65 million viewers watched the two episode arc either in their first run that November or during the following summer as a re-run.[10]
The episode aired two months before the U.S. Supreme Court legalized the procedure nationwide in the Roe v. Wade outcome in early 1973.
http://en.wikipedia.org/wiki/Bea_Arthur#Television
It was pretty historic - as historic as the Kirk Uhura kiss.