Big racial issue? (6)

I believe the answer is:

exodus

I'm a little stuck... Click here to teach me more about this clue!

'big racial issue?' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe they are linked in a way I don't understand?

This is the entire clue.

Can you help me to learn more?

(Other definitions for exodus that I've seen before include "Film of book" , "Second book of the Bible" , "Mass leaving" , "Departure of the Israelites from Egypt, led by Moses" , "Biblical book - going out" .)

I've seen this clue in The Globe and Mail.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.