Today, people are wearing red primarily to honor the birthday of Charlie Kirk, a conservative activist who was tragically assassinated in September 2025. October 14, 2025, would have been his 32nd birthday. Supporters of Kirk, particularly from Turning Point USA, have organized a grassroots movement called "Wear Red Day" where they don red shirts, especially ones labeled "FREEDOM," to mark this occasion and remember him. A Senate resolution has declared this a National Day of Remembrance for Kirk, coinciding with President Donald Trump posthumously awarding Kirk the Medal of Freedom at the White House.

Additionally, there is also a separate and well-known tradition called National Wear Red Day in the United States, observed annually on the first Friday in February to raise awareness about heart disease, especially in women, but this is unrelated to today's event.

So, the reason for wearing red today, October 14, 2025, is specifically to honor Charlie Kirk's memory and legacy.