From "Man in Black":
I wear the black for the poor and the beaten down
Livin' in the hopeless, hungry side of town
I wear it for the prisoner who is long paid for his crime
But is there because he's a victim of the times
I wear the black for those who've never read
Or listened to the words that Jesus said
About the road to happiness through love and charity
Why, you'd think He's talking straight to you and me
Well, we're doin' mighty fine, I do suppose
In our streak of lightnin' cars and fancy clothes
But just so we're reminded of the ones who are held back
Up front there ought to be a Man In Black
I wear it for the sick and lonely old
For the reckless ones whose bad trip left them cold
I wear the black in mournin' for the lives that could have been
Each week we lose a hundred fine young men
And I wear it for the thousands who have died
Believin' that the Lord was on their side
I wear it for another hundred thousand who have died
Believin' that we all were on their side
It's a 1971 protest song against poverty, the indifference of the rich, neglect of the elderly and downtrodden, and the Vietnam War. Cash would almost definitely be a part of the evangelical Left. He's writing about social justice issues (back when "justice" meant something more substantial than the latest leftist talking points).
Would he be "woke"? Perhaps in its original sense ("woke" meaning awakened to the reality of societal injustice, particularly racism). But he died 20 years ago, and a lot of the issues that now fall under the umbrella of "wokeness" (especially gender ideology, apart from gay rights) weren't even on the radar back then.