Thieves / Theft dream meaning is explained below using 1 different source. Each interpretation is shown with its source.
Interpretation 1 — James R. Lewis and Evelyn Dorothy Oliver
Witnessing a theft or an attempted theft may indicate that others are stealing time, energy, or ideas.
If the dreamer is one of the thieves, the dreamer may be usurping the value of others and needs to avoid overstepping boundaries in regard to time, ideas, or other elements of value. (See also Burglar, Robbery, Stealing).
Source: Dream Symbols in The Dream Encyclopedia • Author: James R. Lewis and Evelyn Dorothy Oliver