In simple words, While defending perpetrators of international rights abuses is a popular thread that runs across almost all contemporary governments, who they endorse and just how much they endorse changes dramatically based on the democratic environment. For example, if a US adversary was abusing human rights, we would undoubtedly be outspoken in our assistance, but if a US ally was doing so, we would likely only turn a blind eye.
According to Malcolm Gladwell's concept of "tipping points," stickiness, is what makes people stay focused on an idea, hence influencers have large social circles and are able to disseminate a message quickly and easily.