It is a broad statement and is based on the fact that the SCOTUS has ruled that the police are not required to protect American citizens.
Recent tragic mass shootings are drawing attention (again) to a lot of societal problems we could fix if we wanted to but instead prioritize white supremacy, sexism, and gun culture. Last week, I wrote about the radicalization of young men and the way gun manufacturers prey on this to sell guns...
www.alternet.org
That translates to the simple fact that Americans can't rely on the police to protect them in the event of a crime. So thank goodness the 2nd amendment provides us with a constitutional guarantee that we can arm ourselves for protection.
I was responding to what I assumed was you being sarcastic about the police. IMO most police officers are brave and committed professionals who would "serve & protect" if the situation warranted. However, they are not required to do this (which is baffling to me but that's another discussion) by order of the highest court in the land.