By Martha Brennan A police force in California has come up with a clever way to share pictures of crime suspects without breaking new rules. The Murrieta Police Department has started using mugshots where Lego heads have been put in place of real faces. This is because there’s a new rule that says they can’t show photos of people who might have committed non-violent crimes. The police say this new rule means they have to be careful about when they can show someone’s face. The designers have clearly had their fun with it as the Lego heads have all sorts of expressions like sad faces or crying, …