I am in a bassist in a band full of seniors in high school. (this probably isn't the best place to post this

) me and the rest of them (the band) are graduating soon. We want to play during our graduation ceremony, but we can't find a song that meets the criteria, please help suggest a song.
The Criteria-
*Appropriate (no swearing, racial terms, vulgar meanings ect.)
*Metal or Hard Rock genre (no country or jazz just Metal or Hard rock)
*THE HARDEST PART TO MEET: Inspirational (has to leave the audience with a "Good" message to remember us by)
any help would be appreciated.