Joseph Schreiber allegedly made anti-Islam posts online
GOP nominee 'an emotionally needy, malignant narcissist'
Omar Mateen attended Islamic Center of Fort Pierce
Congress returned from summer recess on Tuesday
Republican acknowledges Pulse nightclub victims, reaffirms marriage opposition
Donald Trump spoke at nearby anti-LGBT conference on Thursday
Gathering to take place a few miles from Pulse nightclub
Orange County Mayor Teresa Jacobs spearheaded resolution
Saturday night event is benefit for shooting victims
Christine Leinonen says 'love trumps hate'