Soapbox Science aims to make a real difference to the visibility and perception of women in science.

UNESCO: Soapbox Science: bringing science to the people

And so this contributes to the perception that blacks are treated differently because of their race, when in fact there is a difference in the policing, but it is driven by policy choices and by the department attempting to be both proactive but also concentrate resources where they think they're needed the most.

NPR: Shooting Strains Police-Community Ties in NYC

Since human depth perception relies on calculating the difference between the angle of view coming to each eye, the result is a 3-D optical illusion.

FORBES: Adventures in the Third Dimension