De facto flag for the <a href="https://en.wikipedia.org/wiki/Anonymous_(group)" class="extiw" title="en:Anonymous (group)">Anonymous</a> group. This is the de-facto flag of the organization known as Anonymous. There are several variants, some with different designs, some with the bars in different arrangements, etc. This appears to be the most prevalent one.
<span lang="en">Anonymous</span><span style="display:none">Unknown author</span>
2007-01-25
<span class="int-own-work" lang="en">Own work</span>