Yellow tape and colored lines
from Kendrick Lamar – Fuck Your Ethnicity Lyrics on Rap Genius
Meaning

Thanks for the picture provided. They are color coded and associated to ethnicity.
Yellow (the tape) for Asians
Chalk line for White people
The pavement for Black people
and the red (blood) for Native Americans or Hispanics.
They all show a unity of working together to showcase a murder, possibly due to racism. Colors working together from a crime due to conflict against color?
Kendrick refers back to this in the next two lines.
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