I know that there is still a lot of bitterness and anger, and arguably justifiably so, when you think about how brutal slavery was and what its brutal legacy still is.

I think it's vital to have something outside your acting to keep you rooted in the real world, and help you fill the vacuum. If you have nothing else, it can be unhealthy. For me being a Christian has been invaluable: it simply means acting isn't the centre of my life.

I truly believe that one of the things that has been lacking in America is a spirit of repentance about the injustices of slavery and the injustices of segregation and racism generally. I truly believe that we cannot come to a place of reconciliation until there is individual repentance and corporate repentance.

If you merely focus on what we already know, then it's not revelatory. You may as well just go and watch a documentary or a few videos on Youtube, and you're good.

Find the audience, be excellent, and you will be fine.

I know I had my equivalents in Adrian Lester and Lenny James when I was at drama school. I remember David Harewood doing 'Othello' at the National, and Adrian Lester having done Cheek by Jowl's famous 'As You Like It and Company' at the Donmar. Not necessarily performances I saw, but just the fact they happened was massively encouraging.

I truly believe slavery is why, as a by-product, we still have a disproportionate amount of black men incarcerated in the USA. It is an extension of that legacy, and that's not going to start to diminish until black people have a new sense of themselves that isn't tied to slavery and feeling inferior. I think the church can be instrumental in that, in terms of repentance, reconciliation and just being more embracing of each other - not just on Sunday, but in life generally.