You are using an older browser version. Please use a supported version for the best MSN experience.

Person of interest in Highland Park shooting has apparent violent online presence

The person of interest in the shooting that killed at least six people in Highland Park, Illinois, left posts of tributes to mass shootings and public killings on social media platforms, according to numerous profiles that appear to belong to him. NBC News' Ben Collins reports.
image beaconimage beaconimage beacon