Have you seen "I am not ashamed" ?? Trigger warning

Okay guys, I have recently been looking up details about columbine. It happened when I was 3. I didn't hear about it until I was like 13 and flyleaf made "Cassie" but I never really looked into this.  I might be 18 years late, but I can't stop looking more into it and learning about it. I can't believe this actually happened, and I know worse things have happened since then. But there's details about it that are just..wow how in the hell. And I think it's because there's so much info on Dylan and Eric and videos of them and they kinda seem normal. I can't believe teens had this kind of...whatever they had. The videos of them screaming threats.. it was acting, they were in drama/theatre and made a lot of homemade movies that were lame as hellz But anywho,
I came across this movie "I am not ashamed" and I am an atheist, so if it's strictly based on Christianity which it looks like it is I might quickly lose interest. I'm just wondering if any of you have watched this and I want to know what YOU think about it. 
Also, kinda believe Rachel scotts story is fake. I have done sooooo much research on this, and I found out that apparently Rachel didn't say anything before she died. Another girl screamed "OH MY GOD" and Eric asked her "do you believe in god now?" And she said "yes..no..I don't know" and then he told her she was pathetic and not worth killing. Then again it's not like any of us know because we weren't there. And it's still horrible and tragic. I just don't want to turn on this movie and cringe the whole time. I just wish they could make a movie about it without a religious agenda that's not a lame documentary. And if you know of one, tell me what's up. 

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