Every time that I login into my machine I am bombarded practically with the same
broad type of content including political propaganda in favour of one of our major parties disguised as news. This is because by deleting everything stored in my local disk about my past activities online at the end of every session the dum algorithm is forced to think that it has encountered a potential target for the first time, a target about whose preferences knows nothing, although the truth is that I have been around for quite a long time.
As to the dangers posed by AI there is plenty of information available online, with one example available bellow.
14 Dangers of Artificial Intelligence (AI) | Built In
