More than half of my posts has downvoting without any comments.

I believe that downvoting without explaining the reasons, as well as anonymous downvoting, should be prohibited.

What is the sense of seeing my questions or answers anonymously or unreasonably downvoted?

I think enormous amount of new-coming professionals are repelled from the site by it.

I believe that moderators should monitor repelling-activists and apply publicly viewable measures against them...