Northerners - Tajiks, or Uzbeks for example - often regard the Pashtuns in the south as trouble makers who get what they deserve.
The blacklist detailed trade union links and described individuals as "trouble makers", "politically motivated" and even recorded whether they had raised health and safety concerns.
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The system, which can run over video cameras in the gun barrel or on the soldier's helmet, will notify users when someone who was present previously turns up at the soldiers current location, which should help them identify trouble makers.
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The real divide is less, the challengers say, toadies versus trouble-makers, or loyalists against usual suspects.
Other potential trouble-makers include Basque and Corsican separatists, never averse to a bomb or two.
The more potential trouble-makers the Syrians have under their thumbs, the greater will be their leverage over Israel.
The Mayor of Prague described the protesters as professional trouble-makers and said their actions had angered the people of Prague.
Officers there broke up a group of persistent trouble-makers by setting individual curfews already permitted under 1994's Criminal Justice Act.
What helped the police do their job was that a number of known trouble-makers within loyalism were off the streets.
The unliberal regarded the largely pliant tribal chiefs as the true representatives of Africa and the educated blacks as power-hungry trouble-makers.
But the law is consistent in one respect: the government has tailor-made each district to reward loyal politicians and punish trouble-makers.
Moreover, since September the West has been notably tough on trouble-makers.
Some Turks dream of new relationships with Iran, Syria or Russia but these countries have a history of backing Turkey's internal trouble-makers, from Kurdish separatists to Islamists.
Large teams of officers in full riot gear took control of parts of the City of London when they were met by a small number of trouble-makers.
Since then, whenever there is a peep from the camps, politicians line up to deliver ritual denunciations of Palestinian trouble-makers and their schemes to destabilise the country.
Strasbourg's courts have handed out unusually severe sentences of up to two years' imprisonment to the few young trouble-makers unlucky enough to get caught (only a dozen arrests were made).
And ETFs are among the favorite tools of fast-trading hedge funds, which can dart in and out of smaller overseas markets so quickly that market makers occasionally have trouble adjusting share prices in time.
But chip makers are having trouble making more precise beams, and the Global Positioning System, which allows people to locate themselves to within a few metres on the surface of the earth, is limited by the performance of its atomic clocks.
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Japanese car makers have also had trouble with luxury models.
Other CIGS makers have run into trouble trying translate the high efficiency and low cost promised by small lab samples of CIGS into large sheets of high-quality, durable and uniform thin films.
Mobile phone makers worldwide have had trouble with a market that is moving from fresh users to upgrades of existing subscribers' phones, and have also suffered as operators concentrate more on sweating more money out of existing customers than on signing up new ones.
But at this point, everyone clearly believes that the auto makers are in as much trouble as they have said that they are.
But recently revised forecasts from Nokia and Samsung, the world's No. 1 and No. 2 handset makers, as well as mobile chip-set manufacturer Qualcomm, augur trouble in 2009.
The trouble with this sober and sensible-sounding approach, in the eyes of Mr Aznar's image-makers, was that if you go by opinion polls it was not winning over enough voters.
The editorial spells more trouble for Vytorin and its sister drug, Zetia--which share an active ingredient--and for their makers, Merck and Schering-Plough.
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