I hereby request IMDb that these two Indian cinema related keyword be removed and made redundant.

"Poliziottesco" has its roots in Italian heist films, it was also strongly influenced by rough-edged American police thrillers of the late 1960s and early 1970s. This subgenre generally used political conflicts and violence for largely apolitical tension-building and cathartic or emotional purposes. The genre's protagonists often simultaneously displayed both right-wing and left-wing views, and protagonists were often working class while villains were often wealthy right-wing conservatives. 
Though poliziotteschi films have been viewed by some critics as condemning a "liberal" or "weak" judiciary system as ineffectual in its treatment of criminals, the genre also suggests a more general distrust of authority, whether left-wing or right-wing, by portraying right-wing law enforcement, politicians and businessmen as hopelessly corrupt and manipulative.

In addition to the above wiki-quotes: 
A movie genre can not be limited to a nation or a country specifics; cinematography tends to preserve no boundary demarcation. Sometimes a set of objective reasons may result in a limited classification, e.g. noir genre. Film noir period is generally regarded as extending from the early 1920s to the late 1950s; and nowadays we operate the Neo-noir subgenre. So, even if we'd have reasons to separate Poliziottesco to the 1960s-1970s, there is no good point to classify a new genre since it was invented earlier. This is why, as I think, there are some keywords suggested for IMDb to separate the specific plots of poliziottesco films, such as:

• bollywood-poliziottesco
• indian-poliziottesco
• british-poliziottesco
• canadian-poliziottesco
• french-poliziottesco
• german-poliziottesco
• hong-kong-poliziottesco
• japanese-poliziottesco
• malaysian-poliziottesco
• north-american-poliziottesco
• spanish-poliziottesco
• swedish-poliziottesco
• taiwanese-poliziottesco
• thai-poliziottesco
• turkish-poliziottesco

and so on. All of them may be used for a specific search. May be there is no need to separate between "bollywood-" and "indian-poliziottesco"; if so, they should be merged to the benefit of latter one.