It would send them a positive message to be better than those who hate you.
As this is a football thread, mate, it's not the place for it. I was born in Germany, and been back since 2005. I've plenty of experience with Islam, and its influence. Some positive, some neutral, some negative. It's a massive debate, the conclusion of which is that yes, a too-strict religion can become an problematic issue in a secular society the more it spreads, and there is plenty of evidence this is happening with Islam in Germany. The criticism however should be on the religious-doctrine itself, not on the majority of people who follow it in a law-abiding fashion (for that would be prejudice, as has happened against Özil).
The complications arise when folk from that religion aren't law-abiding. Depending on how society reacts it can breed prejudice against all people following said religion (which is what is happening, again hence Özil being unfairly demonised). As debate against that doctrine is often shouted down as being itself prejudiced, the debate regresses into actual prejudice against peoples.
While I did say I'm on Özil's side on this thing because I don't support prejudice against peoples of any kind, the above is also why a rise-above-it attitude can help. Instead what he's done is effectively drawn sides. This only adds to the potential for conflict. i.e. you push me, I push back. Forever. Until one drops.