Stay with that question until they give you the name of a political ideology they don't like (there must be at least one). Then ask them, "Okay, do you hate everybody who subscribes to that ideology? Do you hate everyone who lives in a country ruled by that political doctrine?" Of course not. That would be ridiculous.
Make this distinction clear in their minds. You can have an opinion about a political doctrine without hating members who believe in that doctrine or are subject to it. It's not a problem. Those two are quite distinct.
Now, if the person you're talking to doesn't realize Islam is a political doctrine, share this little fact:
Sixty-one percent of the Koran is about non-Muslims. Writings about what Muslims should do is religious. Writings about what non-Muslims should do or how Muslims should deal with non-Muslims is political. Therefore, based on the written content of Islam's most holy book, Islam is more political (61%) than religious (39%).
Read more about that fact here: Statistics and the Meaning of Islam.
We should all be freely talking about Islam. It's okay to have a political opinion. Liberals freely and harshly criticize conservative doctrine. And conservatives freely and harshly criticize liberal doctrine. Sharing a political opinion is a freedom we all rightfully enjoy in a free society. Non-Muslims should feel just as free to criticize Islamic doctrine.