When the nation is at war, and our boys in uniform are being killed, the charedim stay in yeshivah. Learning is the best way to help!
When society demands that charedi students learn secular studies or skills to prepare them for the workforce, charedim respond that they must not take any time away from Torah studies. Hashem will provide parnasah!
But when there is elections, and charedim want to rally support for votes in order to get more money - it's time to empty the yeshivos!