Visual Metaphor: https://en.wikipedia.org/wiki/Visual_metaphor
The origin of “Step and Repeat” came from having celebrities or talent “step” into an area on the red carpet, pose for photographers, leave, and then the next person steps in and “repeats”. Eventually, the sponsors of various events realized that a graphics wall in the background would provide a means for mass distribution of their brand during the “Step and Repeat” process.
This led to the Academy of Motion Pictures using their own logos to highlight their brand at the Oscars.
Subliminal stimuli (/sʌbˈlɪmɪnəl/) (the prefix sup- literally “below, or less than”, while the prefix sub- literally “up to”),[1] contrary to supraliminal stimuli or “above threshold”, are any sensory stimuli below an individual’s threshold for conscious perception.[2] A recent review of functional magnetic resonance imaging (fMRI) studies shows that subliminal stimuli activate specific regions of the brain despite participants being unaware.[3] Visual stimuli may be quickly flashed before an individual can process them, or flashed and then masked, thereby interrupting the processing. Audio stimuli may be played below audible volumes or masked by other stimuli. https://en.wikipedia.org/wiki/Subliminal_stimuli
“Night of the Living Dead” premiered on October 1, 1968, four years after the Civil Rights Act was enacted on July 2, 1964, and several months after the assassination of Dr. Martin Luther King Jr. An African-American actor, Duane Jones, played the lead role of Ben, which at the time, was rather controversial. It was the first time a black man was put in a lead role with an all white cast of a horror film. https://en.wikipedia.org/wiki/Night_of_the_Living_Dead
“Night of the Living Dead” entered the public domain because the original theatrical distributor, the Walter Reade Organization, neglected to place a copyright indication on the prints.
https://en.wikipedia.org/wiki/List_of_films_in_the_public_domain_in_the_United_States
Police killed 253 black males in 2016. https://www.theguardian.com/us-news/ng-interactive/2015/jun/01/the-counted-police-killings-us-database
135 police officers died on the job in 2016. https://www.theguardian.com/us-news/2016/dec/29/police-killed-2016-average