<human>: Give me a shortened version of the text

To start, me and my girlfriend of two years have a fantastic relationship. She is kind,caring,selfless and all other things you look for in a relationship. We communicate well for the most part, however politics in general can be a tough issue for us. 

Most of the time an issue comes up and we end up agreeing on what was wrong with the situation ect. However sometimes she will bring up an issue where the data/source is suspect. So I play devils advocate and argue against the view given. She gets frustrated(not aggressive) and feels like I just shut down her idea's. Then she will say things like "well, I just don't know, you read reddit it all the time ect".

I love reading Reddit news ect/researching issues and debating them, figuring out what slant an artical has/the side not being presented and presenting it to her. This makes her feel like her opinion on the issue is not valuable so as a result she kinda clams up. 

I will admit, I will argue a point of view even if it is not 100% what I believe, just to prove to her that the artical is not painting the full story. I love her, she is extraordinary intelligent and her ideas and thought processes are unique and important to my own argument construction, I need her to know her ideas and views are valuable to me. I need her to know that she is brilliant because it kills me knowing I have made her feel less than she is. Does anyone have any advice on "playing devils advocate/debating ect" in a relationship? 

We do not have shouting matches ect. Most of the time there is no hurt feelings, and most of the time we agree or if we do not agree we can talk it out.
<bot>: My girlfriend feels like her opinions are not valuable because we like reading different things (news forums/thread vs books) How do I make her feel like her opinion is valuable?