I don’t want to de-emphasize, only to set aside for a moment the enormous social-justice implications of ubiquitous pesticides, to address the question of how to defend ourselves.
We should never accept the fact that we swim in a sea of toxins. Anyone who gets a bio-assay, anywhere, winds up horrified. But given the fact that we do, even if we’re very careful about organic sources, re-rinsing &c., what further precautions are merited?
There is substantial, robust, replicated nutrition science (such as The China Study) to back up the case that cutting back on meat greatly decreases your vulnerability to toxins.