The Integrity Initiative was set up to discredit disinformation and fake news emanating primarily from Russia. It should come as no surprise then, that it has been critical of Corbyn and his clique of Kremlin-sympathisers. The fact that it is part-funded by NATO, the US State Department and our own Ministry of Defence only adds fuel to the (f)ire of West-hating Corbynistas like Williamson.
The key thing to remember here is that Williamson wants to shut down an organisation that is critical of Russia and Corbyn. Like so much that swirls around Jeremy Corbyn and his supporters - it stinks of communism.