Yes, China did indeed start the militarization of space after taking down its own satellite back in the year 2007. A number of different nations ended up responding to this anti-satellite test in a negative manner. According to these nations, China was actually involved in the militarization of space.
These nations also pinpointed all the serious and negative consequences that China could face for such a militarization. The spokesman of the Chinese foreign ministry Liu, however, said that no one should feel threatened about this and that China won’t be taking any part in any out of space race of arms.