I did not mean that we have to accept everything but to accept the fact, otherwise I would just be suggesting that activism is futile.
Yes of course we should be diligent in looking at sources on both sides but quite often the sources from Pharma are well published or at least the science of it is well published. Many drugs are not necessarily discovered initially by big pharma, quite often they wait until something is proved to work and then big pharma is good at scaling it up for production. This is true of many industries and it is well known that university especially in the US are subsidised to do research exactly to feed the big corporations which are generally shy in taking risk by doing basic research and await until discoveries are made. But the tactics of the anti vaccine movement have always seemed dubious and their publications are always sketchy and not peer reviewed. They often rely on sensation headlines and on disgruntled and often discredited scientists like Wakefield and Mikovits. Unfortunately this is more likely to reduce scrutiny by true scientists because of the undesirability of this association.