General Discussion
In reply to the discussion: Why Elizabeth Warren Left The GOP [View all]Jim Lane
(11,175 posts)Find the "View history" tab. (In the skin I use, it's near the top, a bit right of center. Do a Ctrl+F search if you can't find it.)
Clicking on that brings you the entire history, in reverse chron order. The most recent version is at the top. Click on the time and date of any earlier edit to see how the article looked after that edit. To the left of that, click on "prev" to see a comparison of that version with the immediately previous one, i.e., a highlight of what changes were made by that edit. Click on "cur" to see a comparison of that version with the current one, i.e., a cumulation of all the changes made since that edit.
There are a few exceptions. For example, if an edit is deemed improper because it violated copyright law, it will be not only reverted but expunged from the history. Otherwise, the history would continue to make the infringing material available, which could subject Wikipedia to liability under DMCA.
As to the "scrubbing" of particular material, there will sometimes be discussion among the editors about whether the material belongs in the article, in light of Wikipedia's standards. You can join in those discussions by clicking on the "Talk" tab (from the article or from the history page) and finding or starting the appropriate thread.