Shaykh Al Uthaymeen said: 
Those who come to the Masjids to innovate in it an innovation, they are prevented from it except if it Fitnah is feared from doing so, such as if they were to be prevented fighting will occur in the Masjids and markets, thus here we repel the greater of the two evils with the lease of the two. 
Sharh Bulughul Maraam 
2/60 
Majid Jawed Al Afghaanee