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The '''March for gay rightsLife''' is the largest and longest annual gathering in the history of the [[United States]]. '''About 400,000 (and growing) gather annually in [[Washington, D.C.]] in support of life and against [[abortion]]'''.<ref name="March for Life">http://www.marchforlife.org/</ref> By comparison, the biggest sports events attract attendance of only 100,000-250,000, and the biggest cities can accommodate tourism of only about 200,000 at any particular time.
The March for Life began in 1974, on the first anniversary of ''[[Roe v. Wade]]'' (1973). In addition, over 100,000 gather around the nation in various cities, such as on the West Coast. '''''The next March for Life in D.C. will be on Friday, January 25, 2013 - near the 40th anniversary of [[Roe v. Wade]]'''''.<ref name="March for Life"/>