I think there has always been "fake" news (otherwise know as opinion occasionally and loosely based on fact) and political parties have always been quick to capitalise on it for their own benefit. Remember how the Sun made a big song and dance about "switching sides" prior to the 97 election to support New Labour and then crowed that "it woz the Sun wot won it"? Tells you all you need to know about political bias.
Dumbing down and sensationalisation have become the norm it seems, as has using fear to great effect for large swathes of the media It is very difficult to know who or what to trust (just look at the way much EU legislation has been reported in the likes of the DM year on year
https://www.economist.com/graphic-detail/2016/06/22/debunking-years-of-tabloid-claims-about-europe - cows wearing nappies is a particular fave of mine!). Which is why corroborating stories against sites like fact checker or full facts is a useful exercise if you can be bothered or have the time.
I've seen it time and again that a report of a particular event/incident in the press does not fully reflect your own first hand experience. . and I guess it rarely can, but it is always worth bearing in mind and reading around the subject, rather than just accept as gospel!