Yo-Yo Ma performed a moving concert at the U.S./Mexico border to protest Trump’s immigration policy.

Yo-Yo Ma chose to play one of his Bach Project concerts in the border town of Laredo, Texas for a reason. The Juarez-Lincoln International Bridge, which stretches over the Rio Grande to connect the sister cities of Laredo, Texas and Nuevo Laredo, Mexico, provided the backdrop for Yo-Yo Ma as he played for a crowd of people in Laredo this weekend. The bridge served as the perfect symbol for the renowned cellist’s message: “In culture, we build bridges, not walls.” For the past two years, 63-year-old Ma has been traveling the world with his “Bach Project”—an exploration of the connections between cultures. Performing Bach’s six suites for cello in 36 locations around the world, Ma hopes to share the composer’s …