Tattooed Rats by John Perrodin

Christianity is outlawed.  Sharing faith is considered hate speech. Worship is done in secret underground settings. Patch, a high school student, has to form his own beliefs, and try not to get killed along the way. He meets characters such as the Wharf Rats, a gang covered in tattoos, who turn out to be believers. Schoolmates betray. True friends are hard to find. Spiritual forces intervene causing havoc and deception. Through it all, can Patch's faith prevail?