Hillary Clinton sent a poignant message with her bright red pantsuit on Tuesday afternoon at the Girls Inc. luncheon in New York City. Clinton’s suit color of choice is no coincidence. She spoke to the group one day before the Day Without A Woman protest and the International Women’s Strike on March 8, when many women will stay home from work and school, refrain from spending money (with the exception of local or female-owned businesses), and march in the streets.

Red is the color associated with the movement, signaling love, energy, and determination. Those who are unable to take the day off in protest are encouraged to wear the color to stand in solidarity with other women. Clinton wearing the color was a show of support for the initiative.

While accepting the Girls Inc.’s Champion for Girls award, Clinton discussed the importance of encouraging young women who may dream of a future in politics. “Let us hope there is a wave of young women running for office in America, and let’s be sure we support them in every way we can,” she said. “Let’s help them shatter stereotypes and lift each other up. They are the history-makers, the glass-ceiling breakers of tomorrow. They are among the reasons I am so optimistic about our future.”

Clinton has used her clothing to send messages in the past, with this red pantsuit being the latest sign of her carefully executed fashion subtext.