Dealing with the same confusion. Perhaps it is designed that Community Anger will kick in only at high levels of rule breakings per second. For me at least Anger is 0 at 25 rule breakings/s and it seems pointless to buy mods.
Interestingly: the rule breakings/s is higher than my posts/s
Edit: ah yeah the big thing on top stays at "Rule 1A has been broken 0 times". Must be broken.