by Gregg Chadwick  (all photos by Gregg Chadwick)   Today in Downtown Los Angeles, an empowered crowd   joined Parkland, Florida father Manuel Olivier  as he created a moving artistic tribute to the 17 shot and killed at Marjory Stoneman Douglas High School - poignantly including his son Joaquin Olivier. We were comprised of Stoneman Douglas students and their families, past Stoneman Douglas graduates, and concerned community members.   Manuel Olivier began with a blank surface set in place outside the Standard Hotel on 6th Street. With a deft combination of wheat pasted paper elements, brushwork, and bold spray painted passages, Olivier created the framework for a memorial to those senselessly cut down at their High School in Florida.      Manuel Olivier creates a moving artistic tribute to the 17 shot and killed at Marjory Stoneman Douglas High School - including his son Joaquin Olivier              Once the artwork's structure was in place, Olivier moved to a more performance ba...