Share this postUvalde gunman displayed warning signs on social media app Yubonews.danpatterson.comCopy linkFacebookEmailNoteOtherUvalde gunman displayed warning signs on social media app YuboThe 18-year-old shooter reportedly had a history of harassing and threatening teenage girls online, particularly on the social media app Yubo.Jun 02, 2022Share this postUvalde gunman displayed warning signs on social media app Yubonews.danpatterson.comCopy linkFacebookEmailNoteOtherSharePreviousNext