Every colored man should realize that the worst enemy of his race is the negro criminal, and above all the negro criminal who commits the dreadful crime of rape
 Theodore Roosevelt, State of the Union Address. copy citation

Context

“only the question of relentlessly punishing bad men, and of securing to the good man the right to his life, his liberty, and the pursuit of his happiness as his own qualities of heart, head, and hand enable him to achieve it. Every colored man should realize that the worst enemy of his race is the negro criminal, and above all the negro criminal who commits the dreadful crime of rape; and it should be felt as in the highest degree an offense against the whole country, and against the colored race in particular, for a colored man to fail to help the officers of the law in hunting down with all possible earnestness and zeal every such infamous offender.” source