How did they “screw up”?
What exactly do you expect police to do BEFORE a crime has been committed?
All you conspiracy nuts think they are fascists for stopping a crime AFTER it was already happening, so do you really expect us to believe you would be happier if the police acted preemptively???
Police are tasked with keeping the peace (preventing crime). The Waco Police were at Twin Peaks before the bikers. Did they just sit there watching multiple felonies being committed before they got out of their patrol cars with guns a-blazin'? That is what it looks like.
Whatever reason the Waco Police were at Twin Peaks, they lost control of the situation. They failed in their task to keep the peace.