Salaamu alaykum wa`rahmatullah wa`barakatuh
first many people dont know who are the jamaat takfeer , Takfeer means "Exclude Muslims from Islaam" to declare Muslims Murtad if their doing Sinns or doind Kuffr al asghar(Small Disbelief). And we can say that their on footsteps of al Khawarij(They killed sahaba, and also declared Muslims as Murtads), The Prophet sallalaahu 3alayhi wassalaam said: " these People read Qu`ran but it doesn`t pass their throuts"(Saheeh Hadeeth) in one another narration he Sallalaahu 3alayhi wassalaam said: " These are the Dogs of the Hellfire"(Saheeh Hadeeth). But Alhamdu lillahi rabil alaamin the Aqeedah(belief) und Manhaj(Methodologie) of Ahlu Sunnah wal Jammah is that if the Haakim(Leader) is Muslim then you have to Follow him, also if hes a faasiq or daalim. And Rasool Allaah sallalaahu 3alayhi wassalam said: " Obey Allaah and his Messenger and the people who have right to order on you(the Leaders are meant ) and in another narration " obey your hukkaam(leaders) if they also beat you and drag you in the dirt".(these are 2 different ahadeeth, with a approximate meaning).
My brothers and Sisters in Islaam we have in our time 2 groups of extremes, the one who say we dont have to pray or to pay zakah or to practice islaam or to show myself as a Muslim, and the other are Like these Takfiris,Sufis,kharijis.. etc. who took Islaam in a way which is against Kitab Allaah and Sunnah, the one who declare Muslims as Murtads, the other who reduce islaam only in Jihaad and qitaal(killing), and the others the sufis who do haraam and went to a extreme that they do shirk and go to graves and to their awliya.
May Allaah protect the Muslims and our Beliefs and our Imaan. Ameen
For more Infos write me Inshaa`Allaah
Jazaaka Allaah kulu khayr wa Baraaka Allaah feek