People can be deceiving and are not always trustworthy. What is a real world example which can justify this statement? Whether it’s a famous person in real life or not, historical.

During the Spanish–American War in 1898, after being led to believe that their independence would be recognized and guaranteed by the United States, the Philippine revolutionaries joined forces with the United States army to chase the Spanish out. However, the revolutionaries were betrayed by Americans as soon as their former enemy departed from the islands. The subsequent Philippine-American war killed more than 250,000 Filipino civilians and 200,000 more as combatants.