Did you miss the MAYBE?? What does MAYBE mean to you? How about ‘perhaps’ or ‘perchance’ or ‘possibly’ or ‘feasibly’. I did NOT say it was a fact, but you have already crucified the cops as cowards. Bcause YOU know that they had numerous chances to stop him and didn’t, because they were lazy, or afraid, or incompetent. Not because they didn’t know who the guy was, where the guy was, or didn’t READ HIS MIND and KNOW he was going to pop up somewhere else two hours later and go on another rampage.
Your placement of the word "maybe" made trying the doors a factual statement, on your part.
Your original statement:
Maybe because when they tried the doors, they couldn’t open them?
Everything about the above statement indicates that, in your mind, they tried the doors, for sure, no doubt about it.
If you had any doubt, you would have placed the word "maybe" before the word "tried," not before "because."
Furthermore, your inclusion of the word "when" seals the deal as well.