How do you exclude display placements?
From the page menu on the left, click Content. Click Exclusions. Click the drop-down arrow to the right of the term “Exclusions”. Choose whether you'd like to exclude placements at the campaign, ad group, or account level.
What is included and excluded from advertising?
The content you can show ads on takes into account, for example, the strength or frequency of profanity, or the appropriateness of subject matter like sensitive events. Ads won't show, for example, on content with repeated strong profanity, strong sexual content, or graphic violence.