It doesn’t have to change your point to severely reduce a reader’s confidence in it. A kind reader would say that difference in detail is hyperbole with the intent to incite an emotional response. A less kind reader would call making up details to better suit your narrative a form of lying. Yes they covered up the train incident, and yes it was despicable and horrible they did so. That aspect is not my problem, it’s the deliberate choice of words to foster not discussion, but outrage. It makes me question your entire narrative and intent before I’ve even had a chance to consider it.
Part of the reason that I didn't know is that while it was unfolding, the state told news reporters not to cover it in detail - the implication was the everybody had died, and that it was not to be discussed any further. I had not looked at the case since. It is fortunate that more people were not harmed, given how many people were on the train.