Thanks to Donald Trump and his surrogates, the public has been presented with a perfect case study of why women don’t come forward about sexual assault.

In the United States, rape, sexual assault and sexual harassment remain underreported crimes. In fact, about two out of every three sexual assaults are never reported to the police. And each time a high profile sexual assault allegation comes out, people ask a variation of the same questions: Why didn’t you come forward sooner? Why didn’t you tell the police?

These questions are being asked again, this time of Trump’s alleged victims, as his surrogates try to discredit these women’s claims.

Vox senior correspondent Liz Plank noticed this, and asked her followers why they didn’t report an assault, using the hashtag #WhyWomenDontReport:

We've had a masterclass today in why women are scared to report sexual assault. Why didn't you report yours? #WhyWomenDontReport — Elizabeth Plank (@feministabulous) October 13, 2016

When I was sexually harassed, I didn't report because he was the head of the department and I didn't want to lose my job. — Elizabeth Plank (@feministabulous) October 13, 2016

As with Kelly Oxford’s #NotOkay tweets, the stories poured in swiftly.

Women around the country began sharing the reasons why they chose not to speak up after an incident of assault or harassment. Some said they feared for their jobs. Others felt their abuser would never be apprehended, so what would the point of accusing him be? And others were certain they would be branded as liars.

Words matter. And the words of a presidential nominee matter on a national scale. As Michelle Obama said today, echoing the way many American women have felt hearing Trump brag about assaulting women: “It has shaken me to my core in a way I could not have predicted.”

Below are 12 tweets that show exactly why women sometimes hesitate to speak up, even when they feel totally and completely violated:

#WhyWomenDontReport because he said it was his right since he took me to Homecoming....30+ years and I have never told a soul — Tracy Recker Riser (@trexgirl) October 13, 2016

Because we're trained from birth to be nice, laugh it off, don't be a bitch, get over ourselves, just ignore it, smile #WhyWomenDontReport — Lisa Marie (@TeeteeintheCity) October 13, 2016

Because I was told to "get over it, you should be happy a guy wanted you" #WhyWomenDontReport — Kara Stone (@_kars) October 13, 2016

At 15, I had already been called a slut despite being a virgin. Who would have believed me? #WhyWomenDontReport — Kara Jex (@kara_jex) October 13, 2016

He was 35, I was 13. Told me that if I told anyone, he'd go to jail. I was 36 when I reported him. #WhyWomenDontReport #StatuteOfLimitations — Janet Mitchell (@janetmitch) October 13, 2016

Because if you report immediately, you just "regret the sex." And if you wait to report, you're "looking for attention." #WhyWomenDontReport — Ponyta 👻 (@typicalfeminist) October 13, 2016

@feministabulous I reported being sexually harassed on the job years ago my boss told me that's what happens when men & women work together — Regine Sawyer (@LockettDown) October 13, 2016

6 mo. after being raped, a guy tried to assault me. Told ppl, the consensus was "You want attention."

Felt pointless.

#WhyWomenDontReport — Ruane K (@Ruadhain_K) October 13, 2016

@feministabulous worked at restaurant, was 17, needed my paycheck, also he'd been there forever and I was new... regrets #WhyWomenDontReport — Leah Fessler (@LeahFessler) October 13, 2016

He was my boyfriend and I didn't want to ruin his life. So I let it nearly ruin my life instead. #WhyWomenDontReport — Lauren Allen (@laurgallen) October 13, 2016

Because he was my landlord. Because I was 21 and feared homelessness. Because my father told me to figure it out myself. #WhyWomenDontReport — Niki Roberts (@LDYPrefers2Save) October 13, 2016

@feministabulous @emmaladyrose because I'd been drinking and he was in the military — Erin (@erinalibrarian) October 13, 2016

Editor’s note: Donald Trump regularly incites political violence and is a serial liar, rampant xenophobe, racist, misogynist and birther who has repeatedly pledged to ban all Muslims — 1.6 billion members of an entire religion — from entering the U.S.

PHOTO GALLERY Republicans Who Have Withdrawn Their Support For Donald Trump