Donald Trump's rhetoric has really stepped up in the days since the Paris bombings.

Republican presidential candidate Donald Trump speaks during a rally in Sioux City, Iowa, Oct. 27, 2015. (AP Photo/Nati Harnik)

Trump said he would consider closing some mosques known for their radical teachings, and would put other mosques under surveillance.

Trump said you have to watch and study the mosques because a lot of talk is going on inside there.

Trump has been campaigning on a platform that has included some radical immigration talks, and is also favoring the banning of all Syrian refugees.