UK unveiled a new definition of extremism on Thursday in response to an eruption of hate crimes against Jews and Muslims, although critics said the change risked infringing on freedom of speech. Antisemitic incidents rose by 147% in 2023 to record levels, especially after the Oct. 7 attacks, according to Community Security Trust, a Jewish safety watchdog. Tell Mama, a group which monitors anti-Muslim incidents, said last month that anti-Muslim hate crimes also had grown by 335% since the attacks.