People helping eachothers because they belong to a same group doesn't mean they're part of a conspiracy.
Otherwise we could claim there's a worldwide chinese, mexican or algerian conspiracy because chineses, mexicans or algerians tend to help eachother when they live in a foreign country.

The only conspiracies in which freemasonry took part lately here in France (where Freemasonery had always been a strong force) were a few financial or political scandals. Some dude helped a 'brother' to get a public job. Some other dude stole a few thousands €. That's about it.

Now I get your point. People are generally afraid of secret/secretive organizations, such as freemasonry. They also for some reason crave for conspiracy theories (as described in Eco's Foucault's Pendulum). Yet, these fears lack any real basis and are completely irrational.

To use for a 'personal experience' argument, I know my grand father was member of the back then most prestigious lodge, and was quite high-ranked (can't remember the exact name of it, Something something of Sion), as well as a member of the (back then) extremely powerful radical party. I pretty much doubt he was part of a judeo bolchevick satanic plot to take over the world and destroy religion. And it does not look like he appointed his children to prestigious offices either ;).