Three years ago a wave of pressure from media and the public forced KiwiSaver providers to ditch investments in clusters bombs, nuclear weapons and tobacco stocks.

Now providers are facing difficult decisions over investments in Facebook, Google and Twitter while also changing the way they invest to match the New Zealand Government's ban on semi-automatic guns.

Facebook has been lambasted for its slow reaction to the livestreaming of the Christchurch terror attacks and the way it was shared across other sites.

Telecommunications companies and major banks have pulled advertising from the social media sites in response.

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Five government-related funds with

What the social media companies are doing