What event is best seen as the origin of the Black Lives Matter movement?

The shooting of Trayvon Martin by George Zimmerman in 2013.

It was cofounded by Alicia Garza, Patrisse Cullors, and Opal Tometi, 3 black community organizers.

one of these is the rhoticity common in most american accents, because in the 17th century, when english was brought to the americas, most english in england was also rhotic.

seeing as no choices were provided, i'll do my best to answer it from knowledge.

job specialization promotes work ethic to the person doing the job. he/she may be strong in the arms and able to lift things, specializing him/her in a job where you lift and carry.