It will make Britain safer if the UK takes part in common European action to tackle cross-border crime such as paedophile networks, cyber-crime, human trafficking, money laundering, drug smuggling and gun-running. It makes sense for European countries to pull together to cut crime and tackle terrorism. The EU can succeed where individual countries acting alone cannot.
The Conservatives and UKIP have consistently opposed measures that help European police forces and judicial authorities to co-operate in investigations into child abuse, human trafficking and cross border crime. If Britain becomes isolated in Europe, or the Conservatives and UKIP succeed in blocking cross-border co-operation on crime and terrorism, they will put British in danger.
Liberal Democrats believe that fighting crime and terrorism, whether through action at home or in Brussels, does not mean we should compromise our traditional legal system and civil liberties or create a surveillance state.
Labour has systematically undermined our cherished freedoms and has tried to get agreements in Europe to do the same things across the EU, for example agreements for mass databases and email and phone surveillance
In Europe, Liberal Democrats MEPs have a proud record of standing up for civil liberties. In the UK, Liberal Democrats would introduce a Freedom Bill to restore and protect our most important liberties.
There is more information on Liberal Democrat policies on crime and liberties in our full manifesto.