Generate text that refutes this claim: PMCs attract less attention and suspicion and can carry out their role more effectively.  Mercenaries often arouse less hostility amongst civilians than soldiers fighting for national armies. In ethnic conflict they are perceived as less partisan. The fact that civilians to some extent do not connect mercenaries with a particular ideological cause, invasion or civil war makes them ideal for protecting safe areas and policing reconstruction projects. For example, PMC Global Risk Strategies successfully guarded the Green Zone in Baghdad, the sealed off section inhabited by coalition staff. As they are mercenaries they can be fighting for the national or local government of where their mission even if they have a different paymaster.
defence house would employ mercenaries
The amount of attention and suspicion depends on what the PMCs are doing not that they are PMCs. Whilst mercenaries appear to be less disliked than American troops in Iraq, in parts of Africa their activities have increased tension. The reputation of a national government is often stained by the activities of hired mercenary groups. The involvement in national military operations of white supremacist adventurers and discredited individuals like Simon Mann is used by men such as Mugabe to challenge the legitimacy of British policy in Africa. These kind of actions by some groups mean that all PMCs are considered with suspicion.