This is the 15289th most frequent Turkish word.
susturmalarına
"To their act of silencing" or "to their silencing."
Here, 'susturmalarına' refers to others trying to silence someone.
Onlara karşı susturmalarına rağmen konuşmaya devam ettiler.
Despite their silencing attempts, they continued to speak.
In this sentence, 'susturmalarına' indicates that the subject prevented others' attempts to silence.
Susturmalarına izin vermedik, çünkü özgürce konuşmak istiyoruz.
We didn't allow them to silence us because we want to speak freely.
Here, 'susturmalarına' describes the class's action of silencing, possibly a behavior collective to students.