Sharing one’s faith—evangelizing—is a core practice among many religions. For Christians, it’s viewed as a mandate from Jesus himself before he departed earth; he commanded his disciples to “spread the good news.”
The refugees in Germany can be atheists, apart from the image of Muslims and other non-Christian religions coming into the country. These are atheist asylum seekers fleeing persecution; sometimes, simply for their lack of belief in the dominant mythology of the culture in which they were born.