The most common and most likely answer to this crossword clue is the 6 letter word RACIAL
I've seen this crossword clue in Financial Times
R
A
C
I
A
L
More clues leading to the result RACIAL
- Ethnic non-religious art almost makes a comeback
- God turning secular folk
- Briefly placed motor in reverse, on coloured lines?
- Ethnic currency of Middle-East catching a cold
- Ethnic disturbance in Carolina, not for a long time
- Excellent vehicle, looking back on length of race
- Ethnic radicals plotted duke's murder
Buddy explains!

The straight part
We know that "Ethnic" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case ethnic = racial.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does RACIAL mean?
RACIAL noun- A skill possessed by all characters of a certain race.
- Of or relating to a race (or a people).