Although the violence against athletic delegations are not new. following for example the Munich massacre held in 1972 where a terrorist Islamic group (Black September) took hostage and later killed almost eleven Israeli Olympic teams. no less true is that over the recent years. the probabilities for Olympic villages as Rio de Janeiro. https://cjvswyhnkpmvq.theisblog.com/35130408/the-study-of-optimization-of-flocculation-and-destabilization-technology-of-waste-pem-drilling-fluid-in-bohai-oilfield