It's not hard to propogate 'wrong' ideas against Islam - thanks to the 'wrong' actions of many muslims who do much of the following:
- fight/kill amongst themselves between Sunni and Shiite
- all too frequently blow up lots of people / buildings / structures (9-11, London Tube, Spanish train, Bali clubs, Bombay bombings, etc)
- start civil wars (Western China, Southern Thailand, Sudan etc) - stats have them involved in 80% of the worlds wars/unrest currently
- bomb other religions (Indonesian church bombings)
- put to death people who convert to another religion (afghanistan, pakistan that I remember. Probably Saudi Arabia would too)
- can rape women without recourse (in Dubai it is the offence of adultery for a married woman to claim rape without the witness of 4 muslim men - as if muslim men would stand by and watch that...making it an offence to ever be raped)
- treat non muslims as second class citizens in almost any Islamic country
- treat their women as property (usually in Islamic countries, but even in non muslim countries)
- preach about how women that get pack raped by muslims unknown to them ask for it (very famous episode of this in australia) and how it is not the mens fault
- treat every attack on a muslim country as religiously motivated, even when the evidence points to political, economical, or resource driven motives (virtually any attack on an Islamic nation by a non Islamic nation attracts this sort of critique)
- blow up history (the Buddha statues carved into a cliff side in Afghanistan)
...now they stay quiet when they are in the minority (but then again the prophet told them when faced with a superior opponent, to convert by any means possible until they were strong enough to make demands)...
...but the history of Islamic spread across the world shows this to be a violent religion to this day. The actions of muslims to this day also show it to be an intolerant religion.
I dare say this summary doesn't do justice to the size of the problem, and leaves a lot of other ugly examples out.
From an outsiders point of view, with many of these problems so entrenched in the religion - What then is there to like about it?