Undergraduate / College entrance essay for Pitt. How have you made an impact? [3]

Hello! I just wrote this essay for undergrad admissions to Pitt.

The prompt:

How have you made an impact at your high school or within your community?

choose one example and explain. 200-300 words (this is 286)

Every Valentine's day, I would pack up my cheesy pink cards with candy taped to the back, anticipating the heart-shaped brownies and rose petals on our desks at school. I would remind my family I loved them, and show affection to all my friends. It was a day for loving and caring for your neighbor. That is, until February 14, 2018 arrived. I checked my phone and watched as the horrific event took place: shots were fired at a Florida high school. My heart sank. I called my friend who had moved to Florida very recently. I got no answer. After a few hours, more information was released about the shooting and I was finally able to take a breath. She was on lockdown, but she was at a different school. As days went by, the victims of the Stoneman Douglas High School shooting began an organization to stop these shootings for good: The March for Our Lives. I found myself engulfed in the movement. I helped spread the word and organize the march in Fort Worth. I called my senator, made flyers and passed them out to anyone who would accept them. I did everything in my power to help set the movement in motion. When it finally came time to walk the streets, I got on a plane and flew to Washington, D.C. to be part of the largest march in US history. I will always advocate for safer schools and do my part in preventing any more children from losing their lives in the classroom. I was a part of something that continues to impact our country almost a year later. I am a part of something that will impact generations to come.

Thank you for your help!! Any feedback is welcome.