HOW TO CONTRIBUTE TO BIKERS AGAINST CHILD ABUSE:

Rummage for vests: BACA members scour stores and secondhand shops for good deals on new or gently used denim jackets and vests in a range of sizes for kids and teenagers. Give money: Donations can be sent to the Maricopa County chapter at P.O. Box 1111, El Mirage, AZ 85335, and the Pima County chapter at P.O. Box 18897, Tucson, AZ 85711, or online at www.bacadonations.org. Volunteer: You must be at least 18; have regular access to a motorcycle; submit to a federal fingerprinted background check; attend monthly BACA meetings, rides, court hearings and other events for a minimum of a year; and receive the unanimous approval of the local BACA board to become a patched member. More information: arizona.bacaworld.org.

PAT SHANNAHAN/THE REPUBLIC Nytro, a member of Bikers Against Child Abuse, plays basketball with Fast Track during a visit. BACA gives abused kids the protection of a bunch of tough-looking people wearing leather and riding motorcycles. Anonymity is part of their protection, so...