Because of the Internet, {social media being the spearhead} there are thousands of news sources that are available, and while it does increase the number of options and opinions that are available in any given subject, at the same time there are plenty of said news sources that hold similar, if not exactly the same opinions and thoughts that someone might have, which means that there is plenty of conformation bias. The more extreme {and often ignorant} opinions now have a message board to share their points of view with everyone, and social media has made it even easier for them to reinforce and remind these people that they aren't the only folks out there.
It has become a double-edged sword in terms of information. As I said before, there are plenty of news sources, message boards and so on to spread their message to all, but in turn, that allows those to be told what they want to hear and often encourages and reinforces their own status quo. After all, it's easy to side with someone who holds similar beliefs to you in many things, whether it's for good or ill.