How the pressure group and movements have dependent on democracy?

On balance, however, pressure groups and movements have deepened democracy. Putting pressure on the rulers is not an unhealthy activity in a democracy as long as everyone gets this opportunity. Governments can often come under undue pressure from a small group of rich and powerful people. Public interest groups and movements perform a useful role of countering this undue influence and reminding the government of the needs and concerns of ordinary citizens.