Muslims are not ashamed of Islam, but only some of them are, and some others think when they become extreme, they would feel proud that they were strict in the religion, so it goes both ways. Try to think carefully of this hadith, because so many Muslims today fell under this category which Prophet Mohammed has described.
Ali said: I heard the Messenger of Allah (SallAllah-u-Alaihi-wa-Sallam) as saying: There would arise at the end of the age a people who would be young in age and immature in thought, but they would talk (in such a manner) as if their words are the best among the creatures. They would recite the Qur'an, but it would not go beyond their throats, and they would pass through the Deen as an arrow goes through the prey. So when you meet them, kill them, for in their killing you would get a reward with Allah on the Day of Judgment. [Sahih Muslim: Book 005, Number 2328]
So, this hadith proves that speaking loud and throwing verses and hadiths here and there isn't the way to deal with things. We should think before that of the way Prophet Mohammed was taking matters on a daily basis and we should ask the current trust worthy scholars for advice, and follow them. Not everyone who use Quran and Hadith is right.
Now, please read the following hadiths as well, and try to ponder them well.
Narrated Abu Huraira: The Prophet said, "Religion is very easy and whoever overburdens himself in his religion will not be able to continue in that way. So you should not be extremists, but try to be near to perfection and receive the good tidings that you will be rewarded; and gain strength by worshipping in the mornings, the nights." (See Fath-ul-Bari, Page 102, Vol 1). (Book
#2, Hadith
#38)
Narrated Abu Burda: The Prophet sent my father and Mu'adh bin Jabal to Yemen and said (to them), "Make things easy for the people and do not put hurdles in their way, and give them glad tiding, and don't let them have aversion (i.e. to make people to hate good deeds) and you both should work in cooperation and mutual understanding" Abu Musa said to Allah's Apostle, "In our country a special alcoholic drink called Al-Bit', is prepared (for drinking)." The Prophet said, "Every intoxicant is prohibited. " (Book
#89, Hadith
#284)