There's a huge gap between what we know and what people are assuming. as far as I know, and correct me if I am wrong, what we know are:
1. the US intelligence community briefed Obama and Trump over what Russia did to interfere with US elections a few days ago and probably last month as well.
2. Buzzfeed leaked a 35 page document today which they claim is the basis of those briefings.
3. The document is supposed to be authored by an ex British intelligence officer. NOT official intel documents from any country, just someone contracted to find out info on Trump by "groups and donors". He says he sourced various people including intelligence officers, ambassadors, and others.
4. We don't know if #2 and #3 are true and tied to #1. It could be the same document, it could be fake, there could be a completely different set of documents.
Keep in mind we went to war on Iraq on the basis of intelligence from a source named Curveball who outrageously made stuff up in order to get Asylum in the west. Just about everything he said was false but because Bush, Cheney, Rumsfeld, and the CIA wanted war with Iraq they all believed it. He was a taxi drive who passed himself off as a nuclear engineer.
https://en.wikipedia.org/wiki/Curveball_(informant)
I am not at all trying to say all these Trump-Russia ties are fake, but people need to wait and see what the investigations lead to. There are a number of claims in these documents that should be verifiable, like when and where Trump stayed in Russia, who visited him, whether the business ties and loans claimed occurred or not, whether his lawyer visited Prague and Russia on the dates claimed, etc.
If the stuff is true its extremely dangerous to our country. If however its false and people run with it as if its true, its extremely damaging to the credibility of the media, which is pretty much near zero as far as many people are concerned.