Antifa, Al-Qaeda, or infrastructure: Far-right split on Amtrak derailment cause

Antifa, Al-Qaeda, or infrastructure: Far-right split on Amtrak derailment cause?
https://www.dailydot.com/layer8/amtrak-derailment-antifa-al-qaeda/

it seems like the Antifa people have taked about using concrete to mess up train tracks before. It seem that before they warned people about happened before the train moved alone. This was a terrible accident but many people on the web noticed that before the accident happened. The local Antifia membership deleted the posting bragging about it from their page.

Here is the stonger points they wanted you to know that were deleted from the internet.

Object on tracks may be cause of deadly Amtrak derailment
https://nypost.com/2017/12/18/object-on-tracks-may-be-cause-of-deadly-amtrak-derailment/

Was it Antifa?
https://itsgoingdown.org

They have a history of doing this, they even deleted the evidence. It looks like the pages was deleted on December 18th, 2017.
https://itsgoingdown.org/olympia-wa-train-tracks-sabotage-stop-fracking-equipment/
http://archive.is/6E74K

If we jump on wayback machine we can see that it's been up there for a while.
https://web.archive.org/web/20170819084158/https://itsgoingdown.org/olympia-wa-train-tracks-sabotage-stop-fracking-equipment/

Here we endorse crimes like pouring concrete on train tracks. We also include a how-to video at bottom of article: 6/28/2017
https://twitter.com/officialantifa/status/880160542442311680?lang=en
http://archive.is/RDuQQ

https://www.facebook.com/photo.php?fbid=10155084317212765&set=p.10155084317212765&type=3&theater
https://www.facebook.com/photo.php?fbid=469941166740577&set=p.469941166740577&type=3&theater