What can you say about London Mayor Sadiq Khan? After the city was plagued by a rash of stabbing attacks, including a terrorist attack last June, the mayor demanded that YouTube and Google crack down on violent videos.

And when London overtook New York in murders for the first time in modern history, the mayor called for a ban on junk food advertisements on London buses and trains. After that, he called on Londoners to redress the gender imbalance among Wikipedia editors, whom he complained are almost entirely men.

So following a terrorist attack earlier this week in which Salih Khater crashed his car into the protective barrier outside of the Houses of Parliament, injuring several pedestrians and cyclists, the mayor is considering a ban on cars around the area.

He might also want to ban cars from London Bridge and Westminster Bridge, where citizens have also been mowed down by terrorists.