Throughout the game you will be presented with choices during a cut-scene to do something with evil Karma or good Karma. This is the first choice you will have to make just after the prologue. Choose the
Evil Karma (red) option to get this trophy.
If you want to know what the choice is, hit the spoiler below:
*** Spoiler - click to reveal ***After chasing Hank in the warehouse, you will run into Augustine. She will show off her concrete power and ask you if Hank shared anything with you. You will then have the Karma options to Turn Yourself In, or Sacrifice the Tribe. Choose Sacrifice the Tribe and the trophy will pop.