Dreams involving themes of violence, cults, and authority figures can be quite intense and often reflect deep-seated emotions or conflicts in your waking life. Here are some possible interpretations of your dream:

1. Fear of Loss of Control: The act of being handed a knife and being pressured to harm yourself may symbolize feelings of being overwhelmed or manipulated in your life. It could indicate that you feel trapped in a situation where others are influencing your decisions.
2. Struggle for Identity: The cult setting suggests a struggle with conformity and the pressure to fit in. Refusing to harm yourself or follow through with the violent act could represent your desire to maintain your individuality and resist external pressures.
3. Conflict with Authority: The presence of law enforcement and your family's reaction might reflect feelings of guilt or shame regarding choices you've made. It could also suggest a fear of judgment from others or a struggle with authority figures in your life.
4. Emotional Release: Crying in your dream indicates a need for emotional release. You may be dealing with repressed feelings that need to be acknowledged and expressed in your waking life.
5. Transformation and Change: The act of fighting back and ultimately being let go suggests a potential for personal growth and transformation. It may indicate that despite feeling trapped or judged, there is a path to freedom and self-acceptance.

Consider reflecting on any current life situations that may be causing you stress or anxiety. This dream could be prompting you to confront these feelings and find ways to assert your own will and identity.