Has your teacher ever asked you why it is important to learn English? The usual answers are because it is easier to find a job, to be able to communicate with people from other countries, to travel abroad, or just because it is compulsory.
However, sometimes understanding a foreign language can be a matter of life and death. Maybe I exaggerate the thing a little? Watch this video first (if you want subtitles, click on the «cc» button).
Felipe II Bilingue 