This June 3, 2022 still image taken from video provided by the Bethel Park School District shows student Thomas Matthew Crooks in the 2022 Bethel Park High School Commencement in Bethel Park, Pa.

Thomas Matthew Crooks resided in Bethel Park, Pa., a predominantly white, relatively affluent, leafy suburb of Pittsburgh that is about an hour’s drive from where the shooting took place Saturday.

His would-be assassin, 20-year-old Thomas Matthew Crooks, had first caught the attention of law enforcement that day when spectators noticed him acting strangely outside the event.

Thomas Crooks' cousin recalled the gunman's father, Matthew Crooks, doing everything in his power to keep the two Pennsylvania families apart, during an exclusive interview with The Post.