The installation explains the creative process behind the memorial commemorating the Ukraine famine.
The event featured prayers and poetry to shed light on those with disabilities.
The service, which will now take place every year, commemorated the students, faculty and staff who have died through music, uplifting messages and prayers.
The memorial came just hours after the first day of testimony in the trial for the man accused of killing him.
In the two years since his passing, Collins' family has helped established a scholarship fund and draft meaningful legislation in the fight for remembrance for their son
About 100 people attended the event.