Since the horrific events in Israel on October 7, 2023, Shimon has been a passionate advocate for justice and healing. He has led the music in rallies in both New York City and Israel, and has curated impactful events, including "Bring Them Home Now" fundraising concerts at Romemu and 92NY and a weekly Havdallah gathering at JCC Manhattan, all dedicated to the mission of bringing the hostages home. His heartfelt song, Matir Asurim ("Free the Captive"), has resonated deeply, spreading across the United States and Israel as a call to free the hostages now.