Coordinated attacks on movie ratings

Hi,

I have observed some cases of coordinated attacks on movie ratings with different motivations. Here are some examples:

1- Celal ile Ceren (2013): This comedy movie was heavily attacked by the followers of a popular Turkish forum/social-media site because of a personal dispute with the movie producers and the main actor. I have heard that just to send this movie to the bottom of the pit, people actually gave ten star ratings to some other Bottom 100 movies. It was once at the first position in Bottom 100 but currently this movie is out of the list probably because of this situation.

2- Gunday (2014): This movie was mostly rated by people from Bangladesh because of its gross historical mistakes/inaccuracies . Currently this movie is at the 3rd position of the Bottom 100.

3- Kod Adi K.O.Z. (2015): Current king of the Bottom 100. This movie was targeted by a religious group from Turkey. Because movie is portraying the group as the main conspirator of the recent political events in Turkey.

I have not watched any of those movies (Most likely neither most of the voters). My gut feeling is that those are mediocre movies at best and deserve low ratings, but not like this, and definitely they do not belong to the Bottom 100.

My question is, can (or should) these kind of attacks on movie ratings be prevented?

Cheers.