howard_lowery: https://www.reddit.com/r/politics/comments/4vm8e2/paul_ryan_...
john_valtierra: https://www.reddit.com/r/politics/comments/4vm7zz/could_sput...
frank_calder: https://www.reddit.com/r/politics/comments/4vm88x/donald_tru...
terry_moore: https://www.reddit.com/r/politics/comments/4vm79m/khizr_khan...
carlos_liu: https://www.reddit.com/r/politics/comments/4vm8xn/donald_tru...
All appear to be single-purpose accounts that only posted in /r/politics, all are currently banned or deleted.
So it looks like someone did make super obvious sockpuppets that posted some pro-Democrat content once. I still don't think you can generalize that to a trend - certainly nothing on the order of the Russian bots. If anything, /r/politics had a reputation at the time of being extremely favorable to conservatives.
It's a photoshop and you've been lied to. I hope this teaches you to think more critically about things, especially when they're what you want to believe. Thanks for playing.
[1] https://www.reddit.com/search?q=title%3APaul+Ryan+Sides+with...
[2] https://www.reddit.com/r/help/comments/18ejnd/are_old_posts_...