THe Merriam-Webster dictionary defines a “meme” as “an idea, behavior, style, or usage that spreads from person to person within a culture” or “an amusing or interesting item (such as a captioned picture or video) or genre of items that is spread widely online especially through social media.” 

Memes are both effective and powerful little communicators that can be seed planters, thought promoters, provokers or disturbers, visual protests or supporters, inspirational or motivational, humorous, etc. They can serve to introduce, augment, supplement, support something else you are posting.

If you search for a search for memes you'll find a number of sites that have a collection of memes. You can be more specific in the type of memes by adding a descriptor in front of memes (ie. humorous, political, etc) 

If you can't find a meme to express your idea, thought, emotion, cause, concern, etc. then create your own. Creating a meme is not difficult and if you search for "meme generator" you'll find a number of sites where you can create memes for free.  

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