Below are links to pages about the most common myths and misconceptions about GMO. 

GMOs have not been adequately tested, and long-term health studies have not been conducted.

Biotech companies pay off anyone who speaks out against them, and so everyone who is speaking in favor of GMO is probably a GMO shill
Monsanto routinely sues farmers because of pollen drifting into their fields
GMO's have increased the amount of herbicides total sprayed after their release
Bt crops release a protein that can burn holes in your stomach
GMO crops have never been proven to help the world
Farmers end up paying more money as a result of using GMO
Monsanto has invented and released terminator technology which prevents farmers from saving seeds
Farmers routinely save their seeds, and biotech companies are trying to prevent this practice to save money