You know the fury that comes over you when you’re affected by other people’s prejudice? The coldness, shock, or devastation when they put you or your loved ones down over race, sexual orientation, age, gender, size, class or ability? Maybe you felt it when your folks wouldn’t let you bring your partner to a family celebration, when a white woman crashed your MLK event to announce that she deals with racism too, or when a classmate blocked your path to stare at your walking aid. Despite what a lot of defensive apologists might try to tell you, these incidents do matter: They’re called microaggressions.

The amazing Tumblr-based website Microaggressions: Power, privilege and everyday life began as a Google document between friends at Columbia University. Now, the site is completely submission-driven and anonymous, and co-founder Vivian Lu says contributors range from high school students to people over sixty, and they live all over the world. Originally created to describe actions stemming from the belief of white superiority, the term “microaggressions” is used here to refer to acts of kyriarchal prejudice against othered people. In an email, co-founder David Zhou elaborated on the site’s mission:

We thought it was important to show that both marginalization and identity consciousness do not come from thin air; they are formed from structures of power and privilege that are both very personal and hard to see. The concept of microaggressions makes them a lot more tangible and less abstract.

Strikingly, the typical Tumblr format—entries in a vertical list, one on top of another—is absent. Instead, blurbs are laid out montage-style, fitting together to fill your screen. (Think of a newspaper’s classified ads, but way more fascinating.) Quotes and experiences appear in either black-on-white or bright fuchsia-on-black, occasionally incorporating photos or videos, followed by a component of microaggressions all too often left out even when they are discussed: how they made the speaker feel. About the unique layout, Lu had this to say:

[T]he website is as close as we could come (with our budget) to showing visually how microaggressions (short, few word/sentence snippets) add up over time & really impact people’s everyday lives.

Screenshot from microaggressions.com homepage

Indeed, though each visual representation of a microaggression may look small, they quickly become overwhelming, resembling a wall of building blocks growing by the day. For those of us who have been told, be it by catcalling strangers or stubborn family members, that we’re being oversensitive (or the ever-awful “You just want to be offended”) hearing variations on our own painful memories—and connecting with other people who dare to speak up—is strangely cathartic: