Today is the anniversary of the Communist Manifesto. This monumental work is one of the most read texts in history, containing a wealth of ideas. It is also a rallying call to the working class – even more powerful today than when it was written.

Friedrich Engels contributions to Marxism remain as important as ever. Adam Booth discusses the key role that Engels played in developing the ideas of scientific socialism – ideas that we continue to fight for today.

The Socialist Party and its international organisation are facing a deep political crisis. This is the product of decades of incorrect methods and perspectives. It is important for Marxists to draw out the lessons of these events.