Memes and the science of psychological preconditioning

If you're not a total noob to this board then you're familiar with this image, you know what it says and probably don't even reread the text to make sure you're remembering correctly. The meme has been burned into your brain through repetition and whatever emotional response you have to the image will now be repeated whenever you see the image or anything that reminds you of it. Seeing a lab coat will remind you of this meme, so will seeing a black woman in many cases. Other memes with similar arrangement and color patterns could trigger the memory or the meme might randomly pop into your head at any inappropriate or random time. The structure of your thought patterns have been morphed, altered and refocused by repeated exposure to this meme.
This thread was created in part to reinforce whatever preconditioning you might now have as well as for the purpose of discussing the magnitude and nature of what effects the conditioning could result in. For example, more black scientists might result from this type of conditioning, but how many? Are you in favor of having more or fewer black scientists?