Serena Williams
ALBERTO PIZZOLI/AFP/Getty Images

Just because Serena Williams is the greatest athlete in the world doesn't mean she doesn't feel a sense of paranoia when around police officers.

On Tuesday, after being a passenger in her own car while her 18-year-old nephew was driving, Williams wrote about how she felt when she saw a police officer. In the Facebook post, Williams noted how nervous she became:

Today I asked my 18 year old nephew (to be clear heā€™s black) to drive me to my meetings so I can work on my phone #safteyfirst. In the distance I saw cop on the side of the road. I quickly checked to see if he was obliging by the speed limit. Than I remembered that horrible video of the woman in the car when a cop shot her boyfriend. All of this went through my mind in a matter of seconds. I even regretted not driving myself. I would never forgive myself if something happened to my nephew. Heā€™s so innocent. So were all ā€œthe othersā€

I am a total believer that not ā€œeveryoneā€ is bad It is just the ones that are ignorant, afraid, uneducated, and insensitive that is affecting millions and millions of lives.

Why did I have to think about this in 2016? Have we not gone through enough, opened so many doors, impacted billions of lives? But I realized we must stride on- for itā€™s not how far we have come but how much further still we have to go.

I than wondered than have I spoken up? I had to take a look at me. What about my nephews? What if I have a son and what about my daughters?

As Dr. Martin Luther King said ā€œThere comes a time when silence is betrayalā€.

I
Wonā€™t
Be
Silent
Serena

Earlier this year, shortly after herĀ historic Wimbledon win, Williams spoke about police brutality and how she worried about young black men, like her nephew.

ā€œI feel anyone in my color in particular is of concern,ā€ Williams said. ā€œI do have nephews that Iā€™m thinking, do I have to call them and tell them, ā€˜Donā€™t go outside. If you get in your car, it might be the last time I see youā€™? That is something that I think is of great concern because it will be devastating. Theyā€™re very good kids.ā€