Discuss weather king uses valid reasoning when he states that "injustice anywhere is a threat to justice everywhere". What evidence does he provide to support this idea? What appeal does he use?

In his "Letter from Birmingham Jail," King argues that "injustice anywhere is a threat to justice everywhere." The evidence he employs is that of racially discriminatory laws in the South. King argues that the existence of unjust laws such as segregation represent an injustice. And this unjustice is an obstacle for achieving equality and justice everywhere in the country. For example, if white people do not believe in segregation, this nonetheless means that they have to abide by the law, causing injustice. The appeal that he uses is logos, as he encourages us to think of the logic of the arguments put forward by lawmakers.