He compared the struggle against slavery in the US with the plight of Irish nationalists, after watching the film Django Unchained.
Mr Adams says anyone offended has 'misunderstood' the context of the tweet.
He compared the struggle against slavery in the US with the plight of Irish nationalists, after watching the film Django Unchained.
Mr Adams says anyone offended has 'misunderstood' the context of the tweet.
