Why did Mr. Berry get burned. ( include who he was with where he was going and what happenend).

From the text:

“Henrietta Toggins,” said Mrs. Lanier, “you know, Clara Davis’s sister that live up there in Strawberry? Well, she’s kin to the Berrys and she was with John Henry and Beacon when the trouble got started. They was gonna drop her off at home—you know John Henry had him one of them old Model-T pickups—but they needed some gas so they stopped by that fillin’ station up there in Strawberry. They was waitin’ there for they gas when some white men come up messin’ with them—been drinkin’, you know. And Henrietta heard ’em say, ‘That’s the nigger Sallie Ann said was flirtin’ with her.’ And when she heard that, she said to John Henry, ‘Let’s get on outa here.’ He wanted to wait for the gas, but she made him and Beacon get in that car, and them men jus’ watched them drive off and didn’t mess with ’em right then. “John Henry, he took her on home then headed back for his own place, but evidently them men caught up with him and Beacon again and starts rammin’ the back of they car—least that’s what Beacon and John Henry told they aunt and uncle when they seed ’em. John Henry knowed he was runnin’ outa gas and he was ’fraid he couldn’t make it to his own place, so he stopped at his uncle’s. But them men dragged him and Beacon both outa that house, and when old man Berry tried to stop it, they lit him afire with them boys.”