Yes, 'End of Watch' is based on true events. But keep in mind that in the process of making a movie, some details might be fictionalized or exaggerated to make it more engaging for the audience.
The movie 'End of Watch' does draw from real-life incidents. However, it's likely that some artistic liberties were taken for dramatic effect while still maintaining a connection to true events.
Yes, 'End of Watch' is inspired by real events and has elements of truth in it.