Riyadh, Dhu-AlQa'dah 16, 1437, August 19, 2016, SPA -- King Abdullah bin Abdulaziz International Foundation for Humanitarian Action celebrates this week, the World Day of Humanity, declaring launching of a competition under the name of "Tweet for humanity", launching public call to tweet in social media, "Twitter" site via hash tag # Tweet_for_Humanity. The aim of hash tag is to encourage community participation in promoting the concept of humanity. Foundation will allocate prizes in honor of the owners of the best 4 Tweets, announced after the end of competition on 25 August , according to the conditions published by the institution on its account of Twitter: @KingAbdullahFD. --- SPA 19:01 LOCAL TIME 16:01 GMT www.spa.gov.sa/w