Original sentence: Clearly, however, that some Social Darwinists were for capitalism does not imply that all capitalists are for Social Darwinism.Similarly, capitalism, especially laissez-faire capitalism, is sometimes equated with Social Darwinism because it thought by some to involve a "sink or swim" attitude toward economic activity
Edited sentence: Clearly, however, just because some Social Darwinists were for capitalism does not mean that all capitalists are for Social Darwinism.Similarly, capitalism, especially laissez-faire capitalism, is sometimes equated with Social Darwinism because it adopts a "sink or swim" attitude toward economic activity