Facebook should help us understand the link between political speech and violence

On Tuesday, The New York Times’ investigation of a study into how Facebook promoted anti-refugee violence in Germany galvanized discussion about how even normal political speech on the platform can drive users to extremes. On Wednesday, the report was criticized on the grounds that it may have unfairly linked correlation to causation, drawing more dramatic conclusions than can be supported by the evidence.
The case against the piece goes like this:The study, which you can read here, has n