Fear of muslims IS rational.
They have a religious obligation to subjugate, convert or kill everyone on the planet.
They have a 1400 year history of conquest and slavery, murder and mayhem.
Islam commands that they continue jihad until everyone else submits or dies.
Their “holy” book is full of instructions from their prophet on making the rest of the world submit.
Islam means submission.
Submit or die are the only options for unbelievers under Islam.
Know Islam, No Peace - No Islam, Know Peace
Islam is a war plan.