First Contact on Mars

Write a story where the Mars colonizers suddenly come across intelligent, previously undiscovered Martian life.

The theme of discovery and its implications could be explored in this prompt. How would humanity react on finding that we are not alone in the universe? How would the colonizers handle the first contact, and how could it affect Earth-Mars relations? Delve deep into potential language barriers, cultural misunderstandings, triumphs and blunders.