For anyone who wishes to claim that GMO's are harmful, please refer to this list of +1,700 scientific studies on the safety of GMO's, of which all come to the conclusion that they are safe.
https://www.geneticliteracyproject.org/wp-content/uploads/2013/10/Ge-crops-safety-pub-list-1.xls
After which, please refer to this list of 400 different studies which support the same claim, across all different contexts.
http://genera.biofortified.org/viewall.php
If you still feel the need to claim that GMO's are harmful, understand that you don't know shit about biology.