what danger is MR. Jamison in in Chapter 11 and What did MR Jamison do to help T.J andwhy did he help him

Kaleb and Thurston Wallace and RW and Melvin Simms smash their way into the Avery house and violently drag out its inhabitants. They break TJ's jaw when he emerges. One man holds up the gun, saying that RW and Melvin saw TJ and two other boys running form the Barnett's store and demanding the money they took. Kaleb kicks TJ in the stomach, knocking him down, and throws Mrs. Avery back against the house when she protests. Mr. Jamison arrives in his car and tells them to take TJ to the sheriff. The sheriff arrives and says that Mr. Granger doesn't want a hanging on his place. Kaleb Wallace wants to take TJ elsewhere to hang him and mentions hanging Mr. Morrison, too. Someone else suggests Mr. Logan. There are cries for hangings as Mr. Jamison tries to shield TJ with his own body. Mr. Jamison is sympathetic to negros and does his best to help families like the Logans with legal advice. Helping TJ would certainly mean trouble for Mr. Jamison in the future.