“Sometimes the person you'd take a bullet for is standing right behind the trigger”

Simplified Meaning:

Imagine having a friend you trust completely. You think they will always be there for you, and you would do anything for them, even risk your life. Now, picture finding out that this friend is actually the one causing you harm. They are the one making your life difficult or betraying you. Think of a situation where someone supports a political leader because they believe in their promises. Later, they might discover that this leader's decisions actually hurt them or their community. It can be shocking and painful to realize that the person you supported or cared for is the one causing your problems. This idea can be relevant in relationships or friendships. It advises being careful and not blindly trusting people. If you’re always checking who has your back and who might turn against you, you can protect yourself from unexpected hurt. Trust is good, but it’s also important to be aware and make sure the people you rely on truly have your best interests at heart.