Bed-in for Peace Day is celebrated on March 25 to promote non-violent protest against wars, originating from a method used by John Lennon and Yoko Ono during their honeymoon in the Amsterdam Hilton Hotel. This innovative form of protest involved the couple inviting the press into their bedroom to discuss peace and display pro-peace signs. The day serves as a reminder of their efforts to voice opposition to the Vietnam War and has inspired similar protests where participants lie down in front of government institutions until their demands are met. Observers typically engage in bed-in protests, commemorating the day by advocating for various causes. The event has also influenced pop culture, with musicians creating posters that echo the sentiment of "Make Love, Not War." While the primary focus is on peace activism, the day highlights the historical context of the Vietnam War and the broader anti-war movement in the United States.