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This category has the following 9 subcategories, out of 9 total.
15:
8:
294:1920s mass shootings in North America
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318:1920s mass shootings in Oceania
270:1920s mass shootings in Europe
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353:20th-century mass shootings
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348:Mass shootings by decade
343:Attacks in the 1920s
246:1929 mass shootings
229:1925 mass shootings
212:1924 mass shootings
199:1923 mass shootings
182:1922 mass shootings
165:1920 mass shootings
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337:Categories
322:(2 C)
298:(2 C)
274:(3 C)
250:(1 C)
233:(1 C)
216:(1 P)
203:(1 C)
186:(1 C)
169:(1 C)
71:1970s
66:1960s
61:1950s
56:1940s
51:1930s
46:1920s
41:1910s
36:1900s
31:1890s
26:1880s
21:1870s
134:25th
129:24th
124:23rd
119:22nd
114:21st
108:20th
102:19th
97:18th
92:17th
87:16th
82:15th
154:0–9
339::
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307:O
283:N
259:E
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