That actually makes me more wary of reddit than tumblr. For others, the llinked-to reddit seems to be mostly about laughing at and sometimes harassing people on tumblr that have pride in alternative lifestyles or viewpoints.
This kind of "alterative lifestyle or viewpoint" is pretty scary: http://factcheckme.wordpress.com/2013/05/19/moron-creativity...
http://www.reddit.com/r/TumblrInAction/comments/1er18l/not_t...
r/tumblrinaction was great in pointing out the ridiculous beliefs and lengths others would go to in the name of "social justice." However, I've seen a surge in activity of making fun of overweight people[1] and even the mods breaking rule one[2]. I'm not surprised by these activities because I expect such group mentality to bring about the same kind of people that social justice warriors did. People make a mockery of "others," it's human nature.
[1]http://www.reddit.com/r/TumblrInAction/comments/1ekf0f/thin_... [2]http://www.reddit.com/r/TumblrInAction/comments/1eefjc/its_o...