"indiscriminate practice" is a correct and usable phrase in written English.
You can use it to describe a practice that does not distinguish between individuals or groups, instead treating everyone the same regardless of potential differences. For example, "The government's policy of indiscriminate practice when it comes to immigration is causing widespread discontent in the population."
Distressed by the indiscriminate practice of medicine by barbers, clergymen, and anyone else inclined toward the art, Linacre obtained from Henry VIII in 1518 letters patent for the institution of a body of regular physicians empowered to decide who should practice medicine in greater London.
Considering all the present evidences, literature does not justify an indiscriminate practice of PRP injections as a fist line treatment.
Because of the frequent raids by the police to arrest gang leaders and the indiscriminate practice of arresting for interrogation all those found, many adults, particularly those with less than perfect police records, periodically left the area to avoid getting arrested.
The letter pointed out that species collections can lead to unexpected findings – famously, a discovery that recent eggshells were thinner than older ones at a British museum alerted Europeans to the dangers of DDT in the 1960s – and that scientists have come a long way from the indiscriminate collecting practices of the 19th century, supporters of collecting argue.
To forestall further pollution of the soil and groundwater aquifers in the study area, we recommend planned and engineered landfill and also enlightenment campaign to stop indiscriminate dumping practices.
As a direct result of indiscriminate breeding practices, as of 2001 only a few thousand purebred Marwaris existed.
Along with this came damage to ocean ecosystems from indiscriminate industrial fishing practices.
Ms. Quinn should stop defending the department's deplorable practice of indiscriminate surveillance of Muslims, a clear abuse of power.
Meat cleavers work, and they aren't in practice so indiscriminate as they may seem to be.
In practice of indiscriminate use of drugs should be controlled.
Land degradation as a result of poor farming practices where indiscriminate use of nitrogen and phosphorus based fertilizers are widespread and in some cases agrochemicals are used, are some of the human induced activities which are most likely to have anthropogenic impact on the water resources within the basin.
