Ways to campaign against use of GMOs and dangerous pesticides.

Each GMO is a separate case. There is nothing inherently harmful about a GMO. Nothing makes it inherently safe, either.

The GMOs that have been farmed in large quantity for years, and eaten by lots of people, clearly can't pose a big risk of causing illness in adult humans. If they were, it would have been apparent in medical statistics.

That doesn't mean they are safe for wildlife, however. (Look at the effect of Roundup on monarch butterflies.) Or that prenatal exposure is safe for humans.

Each GMO is a separate case. If 20 GMOs turn out to be safe, number 21 could be dangerous.