This document summarizes key aspects of the 4th Amendment regarding search and seizure. It outlines the differences between probable cause and reasonable suspicion, with probable cause requiring a likelihood of criminal activity and reasonable suspicion only requiring articulable facts. It also discusses allowable warrantless searches incident to arrest, with consent, or in hot pursuit. The document notes that while racial profiling is not official policy, some believe it occurs unofficially when race rather than evidence prompts police action.