How do Cassie and her brother react to the news of the Barrys' bieng burned?

They are curious about the burning and are also distressed about it. TJ tells Stacey that Mr. Berry and his two nephews were burned by some white men the previous night. Stacey says that Mr. Lanier had fetched Big Ma to help nurse Mr. Berry the night before. TJ knows about the burning because Mrs. Logan had stopped by to talk to his mother about it before school earlier that morning.