I think I read here that hand in hand is a pedo symbol, featured in an ad that is making the rounds for a second time in germany (advertising they are 'in stock'?) https://www.rt.com/viral/359820-muslim-headscarf-ad-germany/

It was made by UNESCO that has many partnerships with youth NGO's: http://en.unesco.org/partnerships/non-governmental-organizations/list?title=&field_acronym_value=&field_interest_value=All&field_postal_address_country=All&page=1

I haven't seen anyone post it and I did try searching. It might be nothing but maybe worth a look into?