Shaikh Muhammad Baazmool (may Allaah preserve him) said:
And among the proofs (showing) that the preservation of security is everyone’s obligation (is because it is an aspect) of Jihaad. Ibn Qayyim Al-Jawziyyah (rahimahullaah) said: As for Jihaad against the leaders of bidah and evil, it is of three levels: Firstly with the hand if one is able ; but if one is unable then with the tongue. And if one is unable, then the third level is (carried out) with the heart (i.e. to hate evil and bidah, and keep away from it and its people). [Zaadul Ma’aad 3/11]
Enjoining good and forbidding evil is from the (types) of Jihaad. Indeed Allaah described the people of Eemaan that indeed they enjoin good and forbid evil. [Allaah (The Most High) said]:
الَّذِينَ إِن مَّكَّنَّاهُمْ فِي الْأَرْضِ أَقَامُوا الصَّلَاةَ وَآتَوُا الزَّكَاةَ وَأَمَرُوا بِالْمَعْرُوفِ وَنَهَوْا عَنِ الْمُنكَرِ ۗ وَلِلَّهِ عَاقِبَةُ الْأُمُورِ
Those (Muslim rulers) who, if We give them power in the land, (they) order for Iqamat-as-Salat. [i.e. to perform the five compulsory congregational Salat (prayers) (the males in mosques)], to pay the Zakat and they enjoin Al-Ma’ruf (i.e. Islamic Monotheism and all that Islam orders one to do), and forbid Al-Munkar (i.e. disbelief, polytheism and all that Islam has forbidden) [i.e. they make the Qur’an as the law of their country in all the spheres of life]. And with Allah rests the end of (all) matters (of creatures). [22:41]
Therefore, it is obligated on us to always enjoin good and forbid evil, (for) without it we will lose the characteristic of being described as the best of all nations and people of authority in the earth. And we will inflict evil and destruction upon ourselves. Allaah [The Blessed and Most High] said:
إِنَّ الْإِنسَانَ لَفِي خُسْرٍ
إِلَّا الَّذِينَ آمَنُوا وَعَمِلُوا الصَّالِحَاتِ وَتَوَاصَوْا بِالْحَقِّ
By Al-‘Asr (the time).
Verily! Man is in loss,
Except those who believe (in Islamic Monotheism) and do righteous good deeds, and recommend one another to the truth (i.e. order one another to perform all kinds of good deeds (Al-Ma’ruf)which Allah has ordained, and abstain from all kinds of sins and evil deeds (Al-Munkar)which Allah has forbidden), and recommend one another to patience (for the sufferings, harms, and injuries which one may encounter in Allah’s Cause during preaching His religion of Islamic Monotheism or Jihad, etc.).
To be continued…InShaaAllaah
 Question to Imaam Abdul Azeez Bin Baaz (Rahimahullaah):
Is enjoining Ma’ruf and forbidding Munkar, namely correcting the wrong by the hand, a right for all Muslims or is it just confined to those in authority and their deputies?
A: Correcting the wrong is a right for all Muslims according to their ability, because the Messenger (peace be upon him) said, “Anyone of you who sees Munkar (that which is unacceptable or disapproved of by Islamic law and Muslims of sound intellect), let them change it with their hand (by taking action); if they cannot, then with their tongue (by speaking out); and if they cannot, then with their heart (by hating it and feeling that it is wrong); and that is the weakest of Iman (faith).”(Muslim, Abu Dawood, Tirmidhi & others)
However, changing by the hand must be based on ability that will not result in greater corruption or evil. Man has the right to rectify matters with his hand (by taking action) in his home, with his children, wife, and servants; and a manager has the authority to make changes with the hand within the organization they are responsible for, in accordance with the instructions that were given to them. Otherwise, people should not change with their hand anything they are not authorized to change. If they do make changes in matters that they have no authority over, this will result in more evil and great corruption between them and the people and between the people and the state.
In this case they should make the change with their tongue (by speaking out). They may say: “O so-and-so! Fear Allah! That is not permissible,” “This is Haram (prohibited),” or: “That is Wajib (obligatory) on you,” and clarify it with Shar’iy (Islamic legal) evidence. This is what can be done by the tongue. As for changing matters with the hand, this should be done where one has authority, such as one’s home, with those under one’s responsibility, or those authorized by the ruler, such as organizations given permission and authority to enjoin Ma’ruf (that which is judged as good, beneficial, or fitting by Islamic law and Muslims of sound intellect). They should make changes in accordance to the degree of authority that has been given to them, in the way prescribed by the Shari’ah (Islamic law), without exceeding their jurisdiction. The same applies to the governor of a city; he should make changes with his hand, in accordance with the instructions he has. http://www.salafitalk.net/st/viewmessages.cfm?Forum=16&Topic=9751
Shaikhul Islaam Ibn Taymiyyah (rahimahullaah) said:
It is obligated on the one who enjoins good and forbids evil that enjoining good and forbidding evil is (carried out) for the sake of Allaah, and that his intention is to rectify the affairs of the one he commands towards good and forbids from evil and to establish the proofs. His intention should not be for seeking leadership for himself, or for his group or to diminish the worth of others.” [Quoted in ‘Kun Salafiyyan Alal Jaad-dati page: 62-63]