The pointy end of the rounds go to the front, and you tap the back edge on
something solid (like your head) once it's fully loaded to make sure all the
cartridges are lined up at the back of the magazine to feed properly.
The quote for that meme comes from over at the Gun Free Zone blog today, a prescient one for your edification:
"We are far past the point of civility, of taking the moral high road. We can either fight the neo-marxists legislatively and at the ballot box now, or we can have a civil war later. That war may be inevitable anyway." - Mike Kupari