There are many films available which uniquely describe the problems associated with doing missions, especially short-term missions, without thinking it through.  Every one is worth watching.

Poverty Inc. (Poverty Inc. is available on Netflix streaming or for rent/purchase at Amazon.)

Living on One Dollar
(https://www.youtube.com/watch?v=tmQujWTMuC8)

Helping Without Hurting in Short-Term Missions
(https://youtu.be/XThVJZcQouU)

Short-Term Mission Trips: Helpful to Whom featuring David Livermore
https://youtu.be/aedbSF-bkP4

Helping Without Hurting – Part 1: Reconsidering the Meaning Of Poverty – LifeChurch.tv
https://youtu.be/a339VZRE3CM

Helping Without Hurting – Part 2: Seeing God at Work – LifeChurch.tv
https://youtu.be/KyiC9kZIdtg

Helping Without Hurting – Part 3: Understanding Why Good Intentions Are Not Enough – LifeChurch.tv
https://youtu.be/7_JzXbdqKHU

Helping Without Hurting – Part 6: Moving Forward – LifeChurch.tv
https://youtu.be/ZfgZyEhWc28

 Are Short-Term Mission Trips Effective? – CBN.com
https://youtu.be/jbHJDeX6Iio