Euthyphro, Apology, Crito, Meno and Phaedo
Why do you think the crito had a significant influence on dr Martin Luther king jr' s conception of non violence civil protest
Plato's crito
Plato's crito
There are some good thoughts on this at the link below,
http://politicalsausagefactory.wordpress.com/2011/02/11/crito-and-martin-luther-king-jr/