Actually the March for Life Movement has been vibrantly active on all over the Good Ole USofA since 1974, however, there has been little Press Coverage given to the Marches.
The Washington D.C. March is only one of many held each year. In 2023 25 Marches are planned in 18 Locations (States, Canada and Washington D.C.). There may be less planned in 2023 since Roe was overturned in 2022 but I could not locate listings other years on the Internet, so I could not make a comparison... https://www.kofc.org/en/what-we-do/faith-in-action-programs/life/march-for-life-dates-times.html
Also there have been many Marches outside of the United States. I found this quote from an article published May 19, 2016: “In recent weeks, marches have been held in Ottawa and Victoria, Canada; Birmingham, United Kingdom; Prague; Rome; Brussels; Lima, Peru; Lisbon, Portugal; Zagreb, Croatia; and in over 40 cities across Colombia! (Marches are also held in France, Mexico, and Ireland. Let us know if we missed any!)”
Since 2002, the annual Marcha por la Vida in Lima has been held March 25, the Day of the Unborn Child. The Archdiocese of Lima has organized the march since 2013, each year welcoming more than 100,000 participants. The most recent march in 2016 attracted over 750,000 — the largest event in Peruvian history...
Smartfella