I find not enough evidence has been given to reach a conclusion either way.
Other than than, when reading news articles, you need to be able to separate facts from the writers opinions, It also often that what isn't said can be very important as well.
Journalist ethics requires all relevant info to be given and that personal biases be minimized, but all too often you get important info left out and opinion being used to generate click bait rather than news.
I'm sure you don't like conservatives sources, so when you read a right biased article, pay attention to slanted language, opinions being used as filler when facts are not given, and what they should present that isn't given. Apply these skill to all news and you'll find they appear in media you agree with as well.