Who Decides What Is Hate Speech?

From Facebook, Google, Twitter agree to delete hate speech in 24 hours:

Germany said on Tuesday that Facebook, Google and Twitter have agreed to delete hate speech from their websites within 24 hours, a new step in the fight against rising online racism following the refugee crisis.

The government has been trying to get social platforms to crack down on the rise in anti-foreigner comments in German on the web as the country struggles to cope with an influx of more than 1 million refugees this year.

The new agreement makes it easier for users and anti-racism groups to report hate speech to specialist teams at the three companies, German Justice Minister Heiko Maas said.

The question this articles does not define is an important one: who decides what is hate speech and what will be removed by these three companies?

Personally, I don't think this is a good policy, because I already know what will happen: the "hate speech" will simply get driven underground where the disinfecting rays of sunlight cannot reach it. In other words: it will make the underlying problems worse than they are.

Then again, I'm starting to think that's the point of this move—to keep us uninformed and fighting with each other so the thugs in charge can solidify their positions of power over us.