Well , pizzagate isn't really about a pizza place, it just started with some weirdness related to that. Mainly, it's the idea that there's a global pedophile network that is run by people in power and they all cover and protect each other, and the Clinton Foundation is tied to it.
In the last few months, there have been a bunch of massive busts in regards to child porn and pedophilia:
FBI arrests 260 people in US and rescues 82 minors (Oct 13th) (Operation cross country X) https://www.fbi.gov/news/pressrel/press-releases/fbi-announces-results-of-operation-cross-country-x
Norway arrests 50 people including high level politicians in pedophile ring ( http://www.independent.co.uk/news/world/europe/norway-paedophile-ring-police-arrest-51-men-a7432441.html )
70,000 member pedophile ring - 670 suspects , 30 countries http://www.veteranstoday.com/2016/08/24/vt-exclusive-largest-pedophile-ring-in-history-70000-members-heads-of-state-the-rats-scramble/
400 Children rescued and 348 adults in Canadian Child pornography bust http://www.nbcnews.com/news/other/nearly-400-children-rescued-348-adults-arrested-canadian-child-pornography-f2D11599561
As well as 2 massive donors to the Clinton foundation cutting funding: - Norway cuts funding to clinton foundation by 90% http://dailycaller.com/2016/11/20/norway-donations-to-clinton-foundation-to-fall-nearly-90-off-peak/
MSM reports on some of these busts, but also goes after the fake news narrative. People start pointing out these massive busts as evidence that something bigger is going on (especially since the norway bust SPECIFICALLY says they believe this is part of a bigger network)... then, the MSM removes news of the bust from multiple sites