St. Louis City Hall will raise the transgender pride flag, at Market Street and Tucker Boulevard, on Monday morning.

In doing do, St. Louis will become only the third city hall to fly the flag, organizers of the event said.

The flag raising ceremony will serve as the kickoff to St. Louis Pride Week, which culminates with a parade down Market Street on June 26,

The flag, which is light blue, pink and white, was first flown at Philadelphia City Hall in 2015. The only other city hall to raise the transgender flag was Boston, last month.

The request was made by PROMO, a statewide advocacy group, and Metro Trans Umbrella Group, two organizations represented in this year's PrideFest.

Katie Stuckenschneider, PROMO’s communication director, said Mayor Francis Slay has been invited to speak. The ceremony also will draw attention to violence against transgender people, she said.

Fourteen transgender women have been killed in the U.S. this year, Stuckenschneider said.

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