The Washington Train Crash and the Media Ignoring Evidence

Yesterday, a train in Washington state was derailed resulting in the death of 3 innocent people and injury of many more. The nature of the derailment is being investigated, although I doubt they will uncover anything shocking or worth discussing. But yesterday while going through YouTube I noticed that Infowars had a video up talking about the crash. The video showed articles and tweets from Antifa, giving instructions on how to derail trains. I've heard news reports claiming that there was an obstruction on the track. In the article posted by Antifa, the instructions entailed pouring cement on the train tracks to derail trains. Antifa also said that they took down a train in April to stop fracking equipment from getting to its destination. The mainstream media however, gasps at the idea of Antifa doing such a thing though. It is pretty disgusting to see the news side with a terrorist organization like this one. it just shows us that we really cannot trust the mainstream media and the lies that come out of those sources. With Antifa admitting to taking down a train before, what makes the Media and rest of the country think they are not capable of doing it again in Washington? Whether or not Antifa planned to take this train down or not, they put out the tools people needed to do something like this. Shouldn't they be held accountable for at least entertaining the idea and spreading the method of derailing trains. Why does the media want to protect them so badly? If this train really was taken down using the method Antifa was promoting, will the media finally do whats right and hold them accountable? Probably not considering they are already using headlines like "'ANTIFA' FALSELY LINKED TO AMTRAK TRAIN DERAILMENT BY RIGHT-WING CONSPIRACY PEDDLERS." This is the response from people simply asking questions and not believing everything they are told by people writing articles like the one I mentioned.
If you guys have any other info regarding this please comment and let me know what you think. Thanks!