Ferguson protests were dangerous and riotous at times. Sure, some people were arrested that shouldn't have been, but they were released. This isn't even comparable to the kinds of journalist arrests and murders we are talking about.
Journalists entrenched in violent protests will inevitably get arrested, that's not a break down of rule of law, nor of democracy; are they getting imprisoned for being journalists who are critical of the president? Not AFAICT. In Turkey journalists are imprisoned for not supporting Erdogan.
Has Trump called for his opponents to be imprisoned for not supporting him? Or, did he claim they had committed crimes for which objectively they should be punished? Erdogan has his political opponents actually imprisoned; and 10s of thousands of their supporters.
Trump is a whacked out crazy misogynist, displays the worst traits of capitalist greed, and of self-obsession, he's a power hungry ignoramus. But Erdogan is an evil genocidal fascist.
A total of 11 journalists have been arrested during the protests in Ferguson
Most were only held briefly, not charged
German reporter says he's never been treated so badly by police
https://www-m.cnn.com/2014/08/19/us/ferguson-journalists-arr...
I saw something once that credibly argued that the treatment of Chelsea Manning in prison amounted to torture.
https://en.m.wikipedia.org/wiki/Chelsea_Manning
The current president of the US has called for his political opponent to be jailed. Not readily finding actual instances of actually jailing political opponents in the US, but I'm not trying that hard either.
https://m.dailykos.com/stories/2018/1/2/1729104/-Donald-Trum...
We also generally treat Blacks and Natives terribly and generally have crazy high rates of incarceration.