BALTIMORE (AP) – Vermont Sen. Bernie Sanders says the level of poverty and run-down housing in Baltimore is “stunning.” He’s taking his presidential campaign to the heart of the city’s riots last spring.

The Democratic candidate was touring the neighborhood of Freddie Gray, who died last spring of a spinal injury he suffered while in police custody, touching off riots. The first of six police officers charged in his death is now on trial.

Sanders was joined Tuesday by black ministers on a tour of Baltimore’s Sandtown-Winchester neighborhood, where he walked past boarded-up homes with signs on the doors reading, “We must stop killing each other.”

Sanders stopped at a mural of Gray. He says it’s “stunning” to see this kind of poverty an hour from the White House and the U.S. Congress.