If you are the identified owner of the site with Google Webmasters, you can easily remove url’s. Here is how to do it.
- Log-in into Google Webmasters.
- Go to “Site Configuration” > Crawler Access > Remove URL.
- Click “New Removal Request”
- Enter the URL that you want to remove from Google Search.
You will be presented with three options. Selecting “Remove page from the search results and cache” will remove the page of search results, “Remove from cache” will remove the recent live page of that URL and “Remove Directory” will remove all pages that fall in a category or tag.
For instance, removing “http://abc.com/tag/” will remove every url that falls in tag directory such as ”http://abc.com/tag/xyz.com”.
If you don’t run a site and want to remove a page that violates you in some manner or so, you can report it to Google for taking action. Do so by going to this page here.