The Social Gospel movement influenced the Civil Rights movement because it applied Christian values and ethics to social issues. Race and the color barrier between white people and black people at the time was a huge issue that this movement focused on, among other issues of course.
As you know, MLK was arguably the most influential public figure in the Civil Rights movement. In a way he was also a big part of the Social Gospel movement in the sense that he was deeply religious, and many of his ideas for social justice were rooted in Christianity.
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"Recycle" would not be one of the famous creative "Rs". This is mostly because the point of this process is to find new ideas by building on small ideas, not to use old ideas over and over again.
One major difference is the cost. A private attorney costs the defendant money for their services. A public defender is free to people who do not have the means to afford their own attorney. Usually, the defendant does not have a choice with the public defender they are assigned.