Premise: People who obey the law(X) will stay out of trouble with the police.(Y)

Conclusion: Those who have managed to stay out of trouble with the police(Y) are those who don't go around breaking the law.(X)

Attack: Although people who obey the law will stay out of trouble with the police, it is faulse to state that all who want to emerge from troubles incurring police walk on the eggshells around the law. There are crimnals who break the law but still manage to get rid of trouble with the police.