In recent years supporters of land reform have become more vocal.
Opposition to the government, although splintered, has become increasingly vocal.
The people of Okinawa have become more vocal about complaining.
By this point, the opposition to the project was becoming increasingly vocal.
Over the last two weeks dissent in Algeria has become more vocal.
But criticism since then has become more vocal and aggressive.
As he has continued to struggle, his teammates have become more vocal in their support, hoping it will help.
The crowd was becoming more vocal, yelling at both sides to do something.
Women have become more vocal, and they demand equal rights.
But protest over the use of temporary foreign workers has become more vocal in a rocky economy.