https://www.reuters.com/article/us-germany-shooting-tech/livestreamed-killings-test-social-media-measures-to-block-extremist-content-idUSKBN1WP03E

Social media companies scrambled on Wednesday to scrub footage of a shooting outside a German synagogue from their platforms, in the first major test of their systems since a massacre in the New Zealand city of Christchurch prompted a global outcry.