This. And also, more important. Go into facebook and find the article there. When the LN trailer came out I went in on HBO and Channel 4s facebook and spent 12 hours straight defending MJ. I replied to every single negative message. I made like 300 posts or so in that - just shut them up. I think thats more important than to be on twitter. Also people are more civil on facebook because they are using their real name and profile etc. And you can discuss at length because there is no character limit. I found it much easier to convince people on facebook than on twitter. On twitter people can see the history of your tweets and think all MJ fans are a sect etc.
The key is to be there EARLY. When the articles are newly posted. When Adrian the maid came out here in sweden, I went in 5 hours after a swedish paper had posted and it was like 85 hating messages posted, so I had to work very hard to present the background on Adrian to turn it around.
If I had been on their first to post the truth, it would never have gotten so out hand! But of course this all time consuming.