EU's upload filters are coming. Why and how the Open Source world must fight them. A year ago, I warned about some terrible copyright legislation being drawn up in the EU that would have major adverse effects on the Open Source world. Its most problematic provision would force many for-profit sites operating in the EU to use algorithmic filters to block the upload of unauthorized material by users. As a result of an unprecedented campaign of misinformation, smears and outright lies, supporters managed to convince/trick enough Members of the European Parliament (MEPs) to vote in favour of the the new Copyright Directive, including the deeply flawed upload filters.