This Meta icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 4,300 icons, all in the same style and quality.
This icon is made up of a rectangle filled with many small squares and lines. It looks just like a flag you might see in front of a government building. There is a thin rectangle that is meant to represent the flag pole.