The former UMD student killed Collins in the early hours of May 20, 2017.
Experts say this trend isn't reassuring.
Jurors convicted a former UMD student of first-degree murder in Collins' death.
He's charged with murder and a hate crime in the stabbing of 2nd Lt. Richard Collins.
He would have turned 26 on Thursday.
The memorial came just hours after the first day of testimony in the trial for the man accused of killing him.
The judge had to tell a packed courtroom Wednesday that symbols supporting one side or another weren't permitted.
Urbanski is charged with murder and a hate crime in the killing of 2nd Lt. Richard Collins.
Sean Urbanski's trial has been delayed four times.
HUMANO is a multimedia project that aims to help people better understand the immigration process.