"Please don't let it be a Muslim," repeated Muslims around the world when first hearing of the Boston bombings.
After 9/11, hate crimes against Muslims rose dramatically according to FBI. So there's legitimate concern that in the wake of the Boston bombing there will be a renewed spike in anti-Muslim fervor.
But Muslims are hardly the first to worry that the horrific actions of a few will have a negative impact on all members of their group. Some of the deadliest U.S. terror plots, like the Oklahoma City bombing, were perpetrated by white men. However, at the turn of the century, German/Irish/Polish/Italian immigrants worried that they'd face added prejudice in the wake of bombings and assassinations perpetrated by members of their own ethnic group.
Here are 8 terror plots and high profile crimes that made immigrant groups and ethnic minorities repeat the same "Please don't let it be a ____ " refrain throughout U.S. history.